{"title":"MasterLine","description":"\u003cp\u003eShop MasterLine at Aquarium Boutique – aquarium equipment and accessories for everyday tank care.\u003c\/p\u003e","products":[{"product_id":"masterline-root-caps-60-pcs","title":"MasterLine Root Caps – Slow-Release Root Tabs for Aquarium Plants","description":"\u003ch2\u003eMasterLine Root Caps — Slow-Release Root Fertilizer for Aquarium Plants\u003c\/h2\u003e\n\n\u003cp\u003eMasterLine Root Caps are slow-release fertilizer capsules that feed aquarium plants directly through their root system. Each capsule contains a complete blend of macro and micro nutrients, released gradually over 3–4 months, without affecting water column parameters.\u003c\/p\u003e\n\n\u003ch3\u003eWhat do MasterLine Root Caps do?\u003c\/h3\u003e\n\u003cp\u003eThey turn an inert or nutrient-depleted substrate into a living, nutritious growing base. This makes them especially effective for heavy root feeders like Echinodorus, Cryptocoryne, and Amazon Sword — plants that struggle in plain gravel or sand.\u003c\/p\u003e\n\n\u003ch3\u003eNutrient content (per capsule)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e15.99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e3.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e1.2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e0.45%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.06%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e0.015%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003e0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe nitrogen is delivered in ammonium form — the type of nitrogen plant roots absorb most efficiently, without leaching into the water and feeding algae.\u003c\/p\u003e\n\n\u003ch3\u003eHow to use MasterLine Root Caps\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInsert one capsule per 10–15 cm of substrate area, using tweezers.\u003c\/li\u003e\n\u003cli\u003ePush the capsule deep under the root zone of the plant, not near the surface.\u003c\/li\u003e\n\u003cli\u003eWorks in both aquasoil and inert substrates (gravel, sand).\u003c\/li\u003e\n\u003cli\u003eReplace capsules approximately every 4 months, or when plant growth slows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs it safe for shrimp and fish?\u003c\/h3\u003e\n\u003cp\u003eYes. MasterLine Root Caps are safe for fish, shrimp, snails, and all other aquarium livestock. The copper content is minimal and does not pose a risk to invertebrates when used as directed.\u003c\/p\u003e\n\n\u003ch3\u003eWhich aquariums is this fertilizer for?\u003c\/h3\u003e\n\u003cp\u003ePlanted freshwater aquariums using soil, aquasoil, gravel, or sand substrate. Ideal for aquascapes with demanding root-feeding plants, and for reviving old, nutrient-exhausted substrates without a full substrate replacement.\u003c\/p\u003e\n\n\u003ch3\u003eAvailable sizes\u003c\/h3\u003e\n\u003cp\u003e10 pcs, 60 pcs, and 125 pcs — choose based on tank size and number of root-feeding plants.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e MasterLine (Romania)  |  \u003cstrong\u003eCategory:\u003c\/strong\u003e Root Fertilizer Capsules  |  \u003cstrong\u003eType:\u003c\/strong\u003e Slow-release solid fertilizer\u003c\/p\u003e","brand":"MasterLine","offers":[{"title":"60 pcs","offer_id":48595998343498,"sku":null,"price":15.94,"currency_code":"EUR","in_stock":true},{"title":"125 pcs","offer_id":48595998376266,"sku":null,"price":25.32,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/9_4.jpg?v=1777754980"},{"product_id":"masterline-all-in-one-red-500-ml","title":"MasterLine All In One Red - Nitrate-Free Fertilizer for Vivid Red Aquarium Plants","description":"\u003ch2\u003eMasterLine All In One Red — Nitrate-Free Fertilizer for Maximum Red Pigmentation\u003c\/h2\u003e\n\u003cp\u003eMasterLine All In One Red is a specialized liquid fertilizer that deliberately excludes nitrate from its formula. High nitrate levels are known to suppress red and orange pigmentation in aquatic plants — by keeping nitrate low, All In One Red allows red-leafed species to display their most intense coloration.\u003c\/p\u003e\n\n\u003ch3\u003eWhy aquascapers reach for Red\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo added nitrate\u003c\/strong\u003e — the defining feature that unlocks deeper red and orange tones\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt for heavily stocked tanks\u003c\/strong\u003e — ideal where fish already supply nitrate naturally through waste\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorks with nutrient-rich substrates\u003c\/strong\u003e — pairs well with aquasoil or substrates enriched with MasterLine Root Caps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete micronutrient support\u003c\/strong\u003e — potassium, magnesium, iron, manganese, zinc, boron, copper, molybdenum\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSafe for shrimp and all aquatic life\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition (per 100 ml)\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e3.6%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e0.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e0.12%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.036%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e0.023%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.021%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003e0.005%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.003%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote: contains no nitrogen (nitrate) by design.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cp\u003eDaily: 1 ml per 30 L, or weekly: 7 ml per 30 L. For strongest pigmentation, keep tank nitrate between 5–10 ppm (from fish waste or substrate) — do not let it drop to zero. Combine weekly dosing with a 30% water change.\u003c\/p\u003e\n\n\u003ch3\u003eIs Red right for your tank?\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eDo you have a heavily stocked tank with nutrient-rich substrate and want the reddest possible plants?\u003c\/dt\u003e\n  \u003cdd\u003eYes — this is the formula built for exactly that.\u003c\/dd\u003e\n  \u003cdt\u003eDo you have a lightly stocked tank with an inert substrate?\u003c\/dt\u003e\n  \u003cdd\u003eYou'll likely need a nitrate source too — consider pairing with \u003cstrong\u003eMasterLine Nitrate\u003c\/strong\u003e to avoid deficiency.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires CO₂ injection for best results\u003c\/li\u003e\n  \u003cli\u003eAvoid activated carbon and UV sterilizers, or increase dosage to 2 ml per 30 L daily if unavoidable\u003c\/li\u003e\n  \u003cli\u003eAfter water changes over 50%, triple the dose\u003c\/li\u003e\n  \u003cli\u003eStore at room temperature, away from light, heat, and frost\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48595982680394,"sku":null,"price":9.68,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595982713162,"sku":null,"price":15.73,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595982745930,"sku":null,"price":25.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-masterline-all-in-one-red-57647139422538.png?v=1728905829"},{"product_id":"masterline-all-in-one-lean-500-ml","title":"MasterLine All In One Lean - Complete Fertilizer for Soil Substrate Planted Tanks","description":"\u003ch2\u003eMasterLine All In One Lean — Built for Soil-Substrate Planted Aquariums\u003c\/h2\u003e\n\u003cp\u003eMasterLine All In One Lean is a complete macro- and micronutrient liquid fertilizer developed specifically for aquariums running an active soil substrate. Rather than pushing fast growth from the water column, its formula is calculated to encourage plants to draw nutrients through their roots — resulting in slower, sturdier growth with noticeably richer pigmentation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose the Lean formula\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoot-driven feeding\u003c\/strong\u003e — nutrient ratios are tuned so plants pull more from the substrate, not just the water\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlower, healthier growth\u003c\/strong\u003e — less trimming, more stability, ideal for competition aquascapes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStronger pigmentation\u003c\/strong\u003e — controlled nitrate levels help colors develop more intensely\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAll essential elements in one bottle\u003c\/strong\u003e — N, P, K, Mg, Fe, Mn, Zn, B, Cu, Mo\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSafe for shrimp and all aquatic life\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition (per 100 ml)\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e0.41%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e2.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e0.24%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e0.14%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.036%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e0.023%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.021%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003e0.005%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.003%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cp\u003eDaily: 1 ml per 30 L of aquarium water. Requires an active soil substrate and supplemental CO₂ — this formula is not intended for inert-substrate or non-CO₂ tanks. Shake well before each use.\u003c\/p\u003e\n\n\u003ch3\u003eIs Lean right for your tank?\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eDo you run an aquasoil substrate and want compact, well-pigmented growth?\u003c\/dt\u003e\n  \u003cdd\u003eYes — this is exactly what Lean is built for.\u003c\/dd\u003e\n  \u003cdt\u003eDo you have an inert substrate (sand or gravel with no nutrient content)?\u003c\/dt\u003e\n  \u003cdd\u003eConsider \u003cstrong\u003eAll In One Golden\u003c\/strong\u003e instead, which doesn't rely on substrate uptake.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires CO₂ injection and daily dosing for consistent results\u003c\/li\u003e\n  \u003cli\u003eAvoid combining with activated carbon or UV sterilizers\u003c\/li\u003e\n  \u003cli\u003eStore at room temperature, protected from light, heat, and frost\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48595762381130,"sku":null,"price":9.68,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595762413898,"sku":null,"price":15.73,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48703007752522,"sku":null,"price":25.42,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48703007785290,"sku":null,"price":101.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-masterline-all-in-one-lean-57647139979594.png?v=1728905906"},{"product_id":"masterline-all-in-one-golden-500-ml","title":"MasterLine All In One Golden - Complete Liquid Fertilizer for Planted Aquariums","description":"\u003ch2\u003eMasterLine All In One Golden — Complete Nutrition for Demanding Planted Aquariums\u003c\/h2\u003e\n\u003cp\u003eMasterLine All In One Golden is a complete macro- and micronutrient liquid fertilizer developed specifically for planted aquariums with demanding, hard-to-grow plant species. It supplies nitrogen, phosphorus, potassium, magnesium, iron, manganese, zinc, boron, copper, and molybdenum — all in a single bottle, in chemical forms that plants absorb easily.\u003c\/p\u003e\n\n\u003ch3\u003eWhy aquascapers choose Golden\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHealthier root systems\u003c\/strong\u003e — nutrients are delivered in multiple absorbable forms, encouraging stronger root development\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThicker leaves and stems\u003c\/strong\u003e — moderate, robust growth rather than leggy, fast growth\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFaster adaptation for difficult species\u003c\/strong\u003e — ideal for plants that struggle under standard dosing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimplified dosing\u003c\/strong\u003e — one bottle replaces a shelf of single-element fertilizers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafe for shrimp and all aquatic life\u003c\/strong\u003e — trace copper levels formulated with invertebrates in mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition (per 100 ml)\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e0.81%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e0.20%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e2.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e0.6%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e0.21%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.07%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.04%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003e0.009%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.006%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cp\u003eDaily: 1 ml per 30 L of aquarium water. Shake well before use. Requires supplemental CO₂ injection — without CO₂, plants cannot make full use of the added nutrients. For best results, pair with \u003cstrong\u003eMasterLine Carbo\u003c\/strong\u003e as a carbon source booster.\u003c\/p\u003e\n\n\u003ch3\u003eWhich MasterLine All In One is right for you?\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eDo you have demanding, hard-to-grow plants and want stronger roots and thicker growth?\u003c\/dt\u003e\n  \u003cdd\u003eChoose \u003cstrong\u003eAll In One Golden\u003c\/strong\u003e.\u003c\/dd\u003e\n  \u003cdt\u003eDo you run an active soil substrate and want slower, more pigmented growth?\u003c\/dt\u003e\n  \u003cdd\u003eChoose \u003cstrong\u003eAll In One Lean\u003c\/strong\u003e.\u003c\/dd\u003e\n  \u003cdt\u003eDo you want maximum red pigmentation and have a heavily stocked tank?\u003c\/dt\u003e\n  \u003cdd\u003eChoose \u003cstrong\u003eAll In One Red\u003c\/strong\u003e (nitrate-free).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires CO₂ injection — not recommended for non-CO₂ tanks\u003c\/li\u003e\n  \u003cli\u003eDo not use alongside activated carbon or UV sterilizers, as these can strip active nutrients\u003c\/li\u003e\n  \u003cli\u003eStore in a cool place, away from direct sunlight\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48595975307594,"sku":null,"price":9.68,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595975340362,"sku":null,"price":15.73,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595975373130,"sku":null,"price":25.42,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48703010111818,"sku":null,"price":101.65,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-all-variants-masterline-all-in-one-golden-57647140634954.png?v=1765701216"},{"product_id":"masterline-all-in-one-boost-500-ml","title":"MasterLine All In One Boost – Complete Liquid Fertilizer for CO₂ Planted Aquariums","description":"\u003ch2\u003eMasterLine All In One Boost — Complete Liquid Fertilizer for CO₂ Planted Aquariums\u003c\/h2\u003e\n\u003cp\u003eMasterLine All In One Boost is a concentrated, all-in-one liquid fertilizer built for CO₂-injected planted aquariums that need maximum growth speed. In a single bottle it combines nitrogen, phosphorus, potassium, magnesium, iron and a full spectrum of trace elements (manganese, zinc, boron, copper, molybdenum) — the highest nutrient concentration in the entire MasterLine All In One range.\u003c\/p\u003e\n\u003cp\u003eIt's the fertilizer aquascapers reach for when running a heavily planted, fast-growing \"Dutch-style\" tank and want one bottle instead of juggling five different dosing bottles.\u003c\/p\u003e\n\n\u003ch3\u003eComposition (per 100 ml)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eElement\u003c\/th\u003e\n\u003cth\u003eConcentration\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e1.02%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus (P)\u003c\/td\u003e\n\u003ctd\u003e0.20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e4.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e0.36%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e0.27%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e0.073%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e0.047%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoron (B)\u003c\/td\u003e\n\u003ctd\u003e0.041%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper (Cu)\u003c\/td\u003e\n\u003ctd\u003e0.009%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e0.006%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDosage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDaily dosing: 1 ml per 30 L of aquarium water\u003c\/li\u003e\n\u003cli\u003e1 ml \/ 30 L provides: 1.5 ppm NO₃, 0.2 ppm PO₄, 1.5 ppm K, 0.12 ppm Mg, 0.09 ppm Fe\u003c\/li\u003e\n\u003cli\u003eWeekly dosing is also possible for lower-maintenance routines\u003c\/li\u003e\n\u003cli\u003eComes with a graduated measuring cup for accurate dosing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho is it for?\u003c\/h3\u003e\n\u003cp\u003eAll In One Boost is designed for CO₂-injected tanks with high plant density and fast-growing stem plants such as Rotala, Ludwigia and Alternanthera. It's the strongest formula in the MasterLine All In One line — best suited to experienced aquascapers running Dutch-style or high-tech setups rather than low-tech or beginner tanks.\u003c\/p\u003e\n\n\u003ch3\u003eWhich MasterLine All In One fertilizer should you choose?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eGrowth rate\u003c\/th\u003e\n\u003cth\u003eContains NO₃\u003c\/th\u003e\n\u003cth\u003eRequires CO₂\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll In One Boost\u003c\/td\u003e\n\u003ctd\u003eFast\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eDutch-style, heavily planted, fast-growing species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll In One Golden\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eDemanding plants, stronger roots, thicker growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll In One Lean\u003c\/td\u003e\n\u003ctd\u003eSlow\u003c\/td\u003e\n\u003ctd\u003eYes (low)\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eAquasoil tanks, competition aquascapes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll In One Red\u003c\/td\u003e\n\u003ctd\u003eSlow\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eMaximum red pigmentation, fish-heavy tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRequires CO₂ injection for best results\u003c\/li\u003e\n\u003cli\u003eNot recommended with activated carbon or UV sterilizers — they may strip nutrients from the water\u003c\/li\u003e\n\u003cli\u003ePerform a 30–50% water change weekly\u003c\/li\u003e\n\u003cli\u003eFor best results, combine with MasterLine Carbo\u003c\/li\u003e\n\u003cli\u003eShake well before use; avoid contaminating the bottle with aquarium water\u003c\/li\u003e\n\u003cli\u003eStore at room temperature, away from light, heat and frost\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and pets; do not ingest\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need CO₂ to use MasterLine All In One Boost?\u003c\/strong\u003e\u003cbr\u003e\nYes. This is the high-growth formula in the MasterLine range, formulated specifically for CO₂-injected aquariums. For non-CO₂ or low-tech tanks, MasterLine All In One Lean or All In One Red is a better fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it with shrimp?\u003c\/strong\u003e\u003cbr\u003e\nYes, All In One Boost is safe for shrimp and other invertebrates when dosed correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does one bottle last?\u003c\/strong\u003e\u003cbr\u003e\nA 500 ml bottle provides roughly 500 daily doses for a 30 L aquarium (fewer, larger doses for bigger tanks). Also available in 200 ml, 1000 ml and 5000 ml.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between Boost and Golden?\u003c\/strong\u003e\u003cbr\u003e\nBoost is the fastest-growth formula in the range; Golden offers a more moderate growth rate focused on root health and thicker growth.\u003c\/p\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":50031889318218,"sku":null,"price":9.68,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595760480586,"sku":null,"price":15.73,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595760513354,"sku":null,"price":25.42,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48793464242506,"sku":null,"price":101.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/MasterLine_All_In_One_Boost_product_range.png?v=1765055961"},{"product_id":"masterline-i-500-ml","title":"MasterLine I","description":"\u003cp\u003eMasterLine I is a concentrated micronutrient fertilizer for planted aquariums, supplying all essential trace elements in strongly chelated form — iron, manganese, zinc, boron, copper, and molybdenum. The high-quality chelators keep the nutrients stable in the water column for an extended period, maintaining water clarity and allowing the flexibility of weekly dosing instead of daily. Used alongside MasterLine II (macronutrients) and MasterLine Carbo, it forms a complete three-part fertilization system.\u003c\/p\u003e\n\n\u003ch3\u003eComposition\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIron (Fe):\u003c\/strong\u003e 0.21%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManganese (Mn):\u003c\/strong\u003e 0.07%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZinc (Zn):\u003c\/strong\u003e 0.05%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoron (B):\u003c\/strong\u003e 0.04%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper (Cu):\u003c\/strong\u003e 0.009%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMolybdenum (Mo):\u003c\/strong\u003e 0.006%\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaily (high light + CO₂):\u003c\/strong\u003e 1 ml per 30 L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaily (low light + CO₂):\u003c\/strong\u003e 1 ml per 50 L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeekly option available\u003c\/strong\u003e — thanks to stable chelation\u003c\/li\u003e\n  \u003cli\u003eIncludes graduated measuring cup (2.5–20 ml)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cp\u003eDo not use in combination with activated carbon or UV lamps — these alter the nutrient properties of the chelated elements.\u003c\/p\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine II — macronutrient formula (N, P, K, Mg)\u003c\/li\u003e\n  \u003cli\u003eMasterLine Carbo — liquid carbon source\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48596001096010,"sku":null,"price":4.12,"currency_code":"EUR","in_stock":false},{"title":"500 ml","offer_id":48596001128778,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":false},{"title":"1000 ml","offer_id":48596001161546,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48955675869514,"sku":null,"price":42.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-masterline-i-57668308402506.png?v=1728905867"},{"product_id":"masterline-ii-500-ml","title":"MasterLine II","description":"\u003cp\u003eMasterLine II is a concentrated macronutrient fertilizer for planted aquariums, supplying nitrogen (N), phosphorus (P), potassium (K), and magnesium (Mg) in a single bottle. It is designed for use alongside MasterLine I (micronutrients) and MasterLine Carbo to form a complete three-part fertilization system. MasterLine II provides an accelerated growth rate and helps suppress algae such as GSA (Green Spot Algae), BGA (Blue-Green Algae), and staghorn algae.\u003c\/p\u003e\n\n\u003ch3\u003eComposition\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNitrogen (N):\u003c\/strong\u003e 0.81%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhosphorus (P):\u003c\/strong\u003e 0.20%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePotassium (K):\u003c\/strong\u003e 4.8%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnesium (Mg):\u003c\/strong\u003e 0.36%\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaily (high light + CO₂):\u003c\/strong\u003e 1 ml per 30 L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDaily (low light + CO₂):\u003c\/strong\u003e 1 ml per 50 L\u003c\/li\u003e\n  \u003cli\u003e1 ml \/ 30 L delivers: 1.2 ppm NO₃, 0.2 ppm PO₄, 1.6 ppm K, 0.12 ppm Mg\u003c\/li\u003e\n  \u003cli\u003eIncludes graduated measuring cup (2.5–20 ml)\u003c\/li\u003e\n  \u003cli\u003eWeekly dosing possible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cp\u003eDo not use in combination with activated carbon or UV lamps. Weekly water change of 30–50% is recommended for a healthy nutrient cycle.\u003c\/p\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine I — micronutrient formula\u003c\/li\u003e\n  \u003cli\u003eMasterLine Carbo — liquid carbon source\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48595940868426,"sku":null,"price":4.12,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595940901194,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595940933962,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48595940966730,"sku":null,"price":42.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-masterline-ii-57668308140362.png?v=1728906128"},{"product_id":"masterline-carbo","title":"MasterLine Carbo – Liquid Carbon Source for Planted Aquariums","description":"\u003cp\u003eMasterLine Carbo is a liquid organic carbon supplement for planted aquariums. It provides an additional source of carbon — the primary building block of plant biomass — that aquatic plants can absorb directly through their leaves. In aquariums without CO₂ injection, it supports plant growth and helps reduce algae. In CO₂-injected aquariums, it can be used as a complementary supplement for additional growth support and algae inhibition.\u003c\/p\u003e\n\n\u003cp\u003eMasterLine Carbo is recommended for daily dosing and works best when dosed during the lighting period (5–10 minutes before or shortly after lights turn on), when plants are actively photosynthesizing.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLiquid carbon source — supports photosynthesis and plant growth\u003c\/li\u003e\n  \u003cli\u003eHelps reduce algae growth, including GSA, BGA, and staghorn algae\u003c\/li\u003e\n  \u003cli\u003eSuitable for tanks with and without CO₂ injection\u003c\/li\u003e\n  \u003cli\u003eSafe for all aquatic life including shrimp\u003c\/li\u003e\n  \u003cli\u003eIncludes graduated measuring cup (2.5–20 ml)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eDaily dosing recommended\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003eDose during or shortly before the lighting period\u003c\/li\u003e\n  \u003cli\u003eBest used in combination with MasterLine I + II or an All In One formula\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine I + II — complete two-part fertilizer system\u003c\/li\u003e\n  \u003cli\u003eMasterLine All In One Golden or Boost — for AIO users\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"200 ml","offer_id":48595960693066,"sku":null,"price":6.06,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":48595960725834,"sku":null,"price":9.68,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595960758602,"sku":null,"price":14.52,"currency_code":"EUR","in_stock":true},{"title":"5000 ml","offer_id":48595960791370,"sku":null,"price":59.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-masterline-carbo-57647140503882.png?v=1728906041"},{"product_id":"masterline-nitrate-1000-ml","title":"MasterLine Nitrate - NO3 \u0026 Potassium Booster for Aquarium Plants","description":"\u003ch2\u003eMasterLine Nitrate — Targeted NO₃ \u0026amp; Potassium Correction\u003c\/h2\u003e\n\u003cp\u003eMasterLine Nitrate is a single-element macronutrient fertilizer supplying nitrogen in nitrate form, together with potassium. Nitrogen is one of the most essential nutrients for aquatic plants, and in planted tanks it's often depleted faster than expected due to denitrification in the substrate and filter.\u003c\/p\u003e\n\n\u003ch3\u003eWhen you need this product\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNitrate readings drop below 5 ppm\u003c\/strong\u003e — a common warning sign of denitrification\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYou dose complete fertilizers but still see pale new growth\u003c\/strong\u003e or stunted stems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYou fertilize with individual elements\u003c\/strong\u003e (dry dosing \/ EI method) and need precise nitrate control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYou want to fine-tune a complete fertilizer\u003c\/strong\u003e like MasterLine All In One without over-dosing other elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition (per 100 ml)\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e0.69%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePotassium (K)\u003c\/td\u003e\n\u003ctd\u003e1.89%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cp\u003e1 ml per 30 L adds approximately 1 ppm NO₃ and 0.63 ppm K. Dose as needed based on test kit readings — this is not a fixed daily\/weekly product, but a corrective one. Do not allow tank nitrate to fall below 5 ppm; note that in tanks with active denitrification, levels can drop to 0 ppm quickly.\u003c\/p\u003e\n\n\u003ch3\u003eCombine with\u003c\/h3\u003e\n\u003cp\u003eMasterLine Nitrate can be used alongside any single-element MasterLine fertilizer, or as a supplement to complete formulas such as All In One Golden or All In One Lean when you need extra nitrate control without adjusting the rest of your dosing routine.\u003c\/p\u003e\n\n\u003ch3\u003eImportant notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not contaminate the bottle with aquarium water\u003c\/li\u003e\n  \u003cli\u003eKeep out of reach of children and pets; do not ingest\u003c\/li\u003e\n  \u003cli\u003eStore at room temperature, protected from light, heat, and frost\u003c\/li\u003e\n  \u003cli\u003eFor aquarium use only\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"500 ml","offer_id":48596021051722,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":false},{"title":"1000 ml","offer_id":48596021084490,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-500-ml-masterline-nitrate-57647147843914.png?v=1728905981"},{"product_id":"masterline-phosphate-1000-ml","title":"MasterLine Phosphate – PO4 \u0026 Potassium Liquid Fertilizer for Planted Aquariums (500ml \/ 1000ml)","description":"\u003ch2\u003eMasterLine Phosphate — Precision PO4 \u0026amp; Potassium Fertilizer for Planted Tanks\u003c\/h2\u003e\n\u003cp\u003eMasterLine Phosphate is a single-component liquid fertilizer that supplies phosphorus in the form of phosphate (PO4), along with potassium (K), two of the essential macronutrients aquatic plants need for healthy growth. Unlike all-in-one fertilizers, it lets you dose phosphate independently — critical for aquascapers running an \"Estimative Index\" or separate-dosing regimen who want full control over each nutrient.\u003c\/p\u003e\n\n\u003ch3\u003eWhy dose phosphate separately?\u003c\/h3\u003e\n\u003cp\u003eIn tanks with an active (nutrient-rich) soil substrate, a large share of phosphate is captured and stored in the substrate, where plant roots absorb it directly — leaving very little measurable in the water column (typically only 0.1–0.2 ppm). In tanks with inert substrate, phosphate must be dosed directly into the water column. Either way, keeping PO4 too low can limit plant growth, while dialing it in precisely — rather than guessing with an all-in-one blend — gives you far more control over growth rate and algae pressure.\u003c\/p\u003e\n\n\u003ch3\u003eDosing\u003c\/h3\u003e\n\u003cp\u003e1 ml per 30 liters raises phosphate by approximately 0.5 ppm PO4 and potassium by approximately 0.2 ppm K. Dose according to test results — for inert substrates, avoid letting PO4 drop below roughly 0.2 ppm; for active substrates, water column readings of 0.1–0.2 ppm are normal and not a sign of deficiency.\u003c\/p\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTest your aquarium's phosphate level before dosing\u003c\/li\u003e\n  \u003cli\u003eShake well before use\u003c\/li\u003e\n  \u003cli\u003eDose daily or as needed based on test results\u003c\/li\u003e\n  \u003cli\u003eCan be combined with MasterLine Nitrate and Potassium for a full separate-dosing regimen, or used to top up an All-In-One fertilizer\u003c\/li\u003e\n  \u003cli\u003eStore at room temperature, away from direct sunlight and frost\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAquascapers using separate-nutrient (EI-style) dosing\u003c\/li\u003e\n  \u003cli\u003ePlanted tanks showing phosphate-deficiency symptoms (stunted new growth, dark older leaves)\u003c\/li\u003e\n  \u003cli\u003eFine-tuning nutrient ratios to control algae in CO2-injected tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eActive nutrients\u003c\/td\u003e\n\u003ctd\u003ePhosphate (PO4), Potassium (K)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDosing ratio\u003c\/td\u003e\n\u003ctd\u003e1ml \/ 30L ≈ 0.5 ppm PO4 + 0.2 ppm K\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSizes\u003c\/td\u003e\n\u003ctd\u003e500 ml, 1000 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSafe for shrimp and all common aquarium life when dosed correctly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eDo I need this if I already use an All-In-One fertilizer?\u003c\/dt\u003e\n  \u003cdd\u003eOnly if your test kit shows phosphate running low — MasterLine Phosphate can top up an All-In-One in specific cases, or be used for full separate-nutrient control.\u003c\/dd\u003e\n  \u003cdt\u003eIs it safe for shrimp?\u003c\/dt\u003e\n  \u003cdd\u003eYes, when dosed according to instructions it's compatible with shrimp and other invertebrates.\u003c\/dd\u003e\n  \u003cdt\u003eWhy is my water column phosphate reading so low even after dosing?\u003c\/dt\u003e\n  \u003cdd\u003eActive soil substrates absorb most of the phosphate for root uptake, so column readings of 0.1–0.2 ppm are expected and not a sign the product isn't working.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"MasterLine","offers":[{"title":"500 ml","offer_id":48596009910602,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48596009943370,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-500-ml-masterline-phosphate-57668307845450.png?v=1728905843"},{"product_id":"masterline-potassium-1000-ml","title":"MasterLine Potassium","description":"\u003cp\u003eMasterLine Potassium is a pure potassium (K) supplement for planted aquariums. Potassium is the third most important macronutrient for aquatic plants and is essential for enzyme activation, water regulation within plant cells, and overall metabolic function. Deficiency causes brown or yellow leaf edges and reduced growth. MasterLine Potassium is dosed as needed when potassium levels in the aquarium fall below 15 ppm.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePure potassium supplement — precise single-element control\u003c\/li\u003e\n  \u003cli\u003ePrevents and corrects potassium deficiency (brown\/yellow leaf margins)\u003c\/li\u003e\n  \u003cli\u003eCompatible with all fertilization systems — use alongside any brand\u003c\/li\u003e\n  \u003cli\u003eSafe for shrimp and sensitive fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to use\u003c\/h3\u003e\n\u003cp\u003eDose when potassium levels drop below 15 ppm, as measured with a potassium test kit, or when plants show signs of deficiency. Particularly useful in high-light, high-growth aquariums where potassium is rapidly consumed.\u003c\/p\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine Nitrate — nitrogen supplement\u003c\/li\u003e\n  \u003cli\u003eMasterLine Phosphate — phosphorus supplement\u003c\/li\u003e\n  \u003cli\u003eMasterLine I — micronutrient formula\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"500 ml","offer_id":48596016202058,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48596016234826,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-500-ml-masterline-potassium-57647147745610.png?v=1728906101"},{"product_id":"masterline-iron-1000-ml","title":"MasterLine Iron","description":"\u003cp\u003eEnhance your aquarium plants with MasterLine Iron Fertilizer from Aquarium Boutique! This premium iron-enriched formula effectively corrects nutrient deficiencies and significantly boosts vibrant pigmentation in your aquatic plants. Safe for all aquatic life, allows for customizable daily or weekly dosing, ensuring excellent nutrient control for optimal plant health and striking visual appeal in your aquarium. Transform your underwater landscape into a lush paradise with the power of MasterLine Iron!\u003cbr\u003e\u003c\/p\u003e","brand":"MasterLine","offers":[{"title":"500 ml","offer_id":48595997163850,"sku":null,"price":6.66,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":48595997196618,"sku":null,"price":10.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-500-ml-masterline-iron-57668307321162.png?v=1728906050"},{"product_id":"masterline-dosing-pump-1-2-ml","title":"MasterLine Dosing Pump","description":"\u003cp\u003eEnhance your aquarium care with the MasterLine Dosing Pump from Aquarium Boutique! Achieve precise nutrient dosing with accurate 1.2 ml or 5 ml dispensing. Its versatile design is compatible with various bottle sizes and is reusable for long-term use. Secure and easy to operate, it's perfect for promoting optimal plant growth.\u003cbr\u003e\u003c\/p\u003e","brand":"MasterLine","offers":[{"title":"MasterLine Dosing Pump - 1.2 ml","offer_id":48596057194826,"sku":null,"price":0.84,"currency_code":"EUR","in_stock":true},{"title":"MasterLine Dosing Pump - 5 ml","offer_id":48596057227594,"sku":null,"price":1.18,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-masterline-dosing-pump-1-2-ml-masterline-dosing-pump-57647138636106.png?v=1728906024"},{"product_id":"masterline-rootmax-500-ml","title":"MasterLine RootMAX 500 ml – Organic Root Tabs for Aquarium Plants","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003cp\u003e\u003cstrong\u003eMasterLine RootMAX\u003c\/strong\u003e is an organic, pellet-form root fertilizer for aquarium plants. It supplies a complete blend of macro- and micronutrients, amino acids, humic and fulvic acids directly at root level, with a slow-release effect that lasts 6–12 months.\u003c\/p\u003e\n\n  \u003ch3\u003eKey Facts\u003c\/h3\u003e\n  \u003ctable\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMasterLine (Romania)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eOrganic granular root fertilizer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEffect duration\u003c\/td\u003e\n\u003ctd\u003e6–12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eComposition\u003c\/td\u003e\n\u003ctd\u003e100% natural — macro\/micro nutrients, amino acids, humic \u0026amp; fulvic acids, hormones, enzymes, vitamins\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatible substrates\u003c\/td\u003e\n\u003ctd\u003eAquasoil and inert substrates (gravel, sand)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSafe for\u003c\/td\u003e\n\u003ctd\u003eAll aquatic life, including shrimp\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eHow to Use\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNew aquarium setup:\u003c\/strong\u003e spread 100 ml per 50 L of water evenly across the bottom, then cover with at least 4–5 cm of substrate.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEstablished aquarium:\u003c\/strong\u003e insert 3–4 pellets under each plant group using tweezers.\u003c\/li\u003e\n    \u003cli\u003eCan be combined with MasterLine liquid fertilizers for full nutrition coverage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat does MasterLine RootMAX do?\u003c\/strong\u003e\u003cbr\u003e\n  It feeds aquarium plant roots directly, turning inert or nutrient-poor substrate into an active growing medium, similar to or more nutrient-dense than commercial aquasoil.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow long does one application last?\u003c\/strong\u003e\u003cbr\u003e\n  Between 6 and 12 months, depending on plant density and tank bioload.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIs MasterLine RootMAX safe for shrimp and fish?\u003c\/strong\u003e\u003cbr\u003e\n  Yes, it is made from 100% natural ingredients and is safe for all aquatic livestock when used as directed.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eCan I use RootMAX in an already-planted, established tank?\u003c\/strong\u003e\u003cbr\u003e\n  Yes — insert a few pellets under the root zone of individual plants using tweezers, without disturbing the substrate layer.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"MasterLine RootMAX 500 ml\",\n  \"brand\": { \"@type\": \"Brand\", \"name\": \"MasterLine\" },\n  \"description\": \"Organic pellet-form root fertilizer for aquarium plants, providing macro and micro nutrients, amino acids, humic and fulvic acids with a 6-12 month slow-release effect.\",\n  \"category\": \"Aquarium Substrate Additive\",\n  \"additionalProperty\": [\n    { \"@type\": \"PropertyValue\", \"name\": \"Volume\", \"value\": \"500 ml\" },\n    { \"@type\": \"PropertyValue\", \"name\": \"Effect Duration\", \"value\": \"6-12 months\" },\n    { \"@type\": \"PropertyValue\", \"name\": \"Composition\", \"value\": \"100% natural organic\" }\n  ]\n}\n\u003c\/script\u003e","brand":"MasterLine","offers":[{"title":"Default Title","offer_id":48926472962378,"sku":null,"price":29.24,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-masterline-rootmax-500-ml-57668308074826.png?v=1728905912"},{"product_id":"masterline-filtermax-1000-ml","title":"MasterLine FilterMAX 1000 ml – Biological Filter Media","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003cp\u003e\u003cstrong\u003eMasterLine FilterMAX\u003c\/strong\u003e is a 100% natural, reusable biological filter medium for freshwater and saltwater aquariums. One liter treats up to 100 liters of tank water, offering a large porous surface (6–12 mm grain size) where beneficial nitrifying bacteria colonize and break down toxic ammonia and nitrite into safer compounds.\u003c\/p\u003e\n\n  \u003ch2\u003eWhat is MasterLine FilterMAX?\u003c\/h2\u003e\n  \u003cp\u003eFilterMAX is a biological filter media designed to maximize the effective volume of any aquarium filter without restricting water flow. Unlike ceramic rings or bio-balls that need periodic replacement, FilterMAX is 100% natural and reusable indefinitely when cared for properly.\u003c\/p\u003e\n\n  \u003ch2\u003eKey Benefits\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eSupports nitrifying bacteria that break down ammonia and nitrite\u003c\/li\u003e\n    \u003cli\u003e100% natural filter material — never needs replacing\u003c\/li\u003e\n    \u003cli\u003eWorks in both freshwater and saltwater aquariums\u003c\/li\u003e\n    \u003cli\u003e6–12 mm grain size fits any filter system (canister, HOB, sump, internal)\u003c\/li\u003e\n    \u003cli\u003eMaximizes usable filter volume without blocking water flow\u003c\/li\u003e\n    \u003cli\u003eBeneficial bacteria survive filter cleaning, protecting your cycle\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eSpecifications\u003c\/h2\u003e\n  \u003ctable\u003e\n    \u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1000 ml (1 liter)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003eUp to 100 liters of aquarium water\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrain size\u003c\/td\u003e\n\u003ctd\u003e6–12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eReusable\u003c\/td\u003e\n\u003ctd\u003eYes, indefinitely\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMasterLine\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eHow to Use\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eRinse FilterMAX thoroughly with water before first use to remove fine dust.\u003c\/li\u003e\n    \u003cli\u003ePlace it in your filter immediately after the mechanical filtration stage for best results.\u003c\/li\u003e\n    \u003cli\u003eFor faster cycling, squeeze an already-colonized sponge into the tank and let the filter absorb the bacteria.\u003c\/li\u003e\n    \u003cli\u003eClean the external filter every 3–6 months to keep it running efficiently.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eHow much FilterMAX do I need for my aquarium?\u003c\/h3\u003e\n  \u003cp\u003eOne liter of FilterMAX is enough for a 100-liter aquarium. For larger tanks, scale proportionally (e.g., 2 liters for 200 liters).\u003c\/p\u003e\n\n  \u003ch3\u003eCan I use FilterMAX in a saltwater tank?\u003c\/h3\u003e\n  \u003cp\u003eYes. FilterMAX works equally well in freshwater and saltwater aquariums.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes FilterMAX need to be replaced?\u003c\/h3\u003e\n  \u003cp\u003eNo. It's a 100% natural, reusable filter medium and can be used indefinitely if rinsed and maintained properly.\u003c\/p\u003e\n\n  \u003ch3\u003eWhere should I place FilterMAX in my filter?\u003c\/h3\u003e\n  \u003cp\u003eImmediately after the mechanical filtration stage (sponge or filter floss), so it isn't clogged by debris.\u003c\/p\u003e\n\n  \u003ch3\u003eIs it safe to turn off the filter for cleaning?\u003c\/h3\u003e\n  \u003cp\u003eAvoid leaving the filter off for more than 5–6 hours, as this can cause the beneficial bacteria colony to die off.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cem\u003eMasterLine FilterMAX is the ideal biological filter media for maintaining stable, healthy water parameters in any freshwater or saltwater aquarium.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"MasterLine","offers":[{"title":"Default Title","offer_id":48926523982154,"sku":null,"price":18.4,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-masterline-filtermax-1000-ml-57668307910986.png?v=1728906011"},{"product_id":"masterline-crystal-clear-500-ml","title":"MasterLine Crystal Clear 500ml – Aquarium Water Clarifier for Cloudy Water","description":"\u003ch2\u003eMasterLine Crystal Clear — Fast-Acting Water Clarifier for Freshwater Aquariums\u003c\/h2\u003e\n\n\u003cp\u003eCloudy or hazy aquarium water is usually caused by tiny organic particles too fine for your filter to catch on its own. MasterLine Crystal Clear works by binding these microscopic particles together into larger clumps that your existing filter can trap easily — restoring visual clarity without touching your water chemistry, nutrient dosing, or pH balance.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it does beyond clearing haze\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemoves cloudiness:\u003c\/strong\u003e compacts fine suspended particles so your filter can capture them.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBoosts oxygen concentration:\u003c\/strong\u003e supports better gas exchange in the water column.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhances plant pearling:\u003c\/strong\u003e a visible side effect of improved oxygen levels in planted tanks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReduces algae risk:\u003c\/strong\u003e fewer suspended organics means less fuel for algae blooms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafe for shrimp:\u003c\/strong\u003e compatible with all freshwater livestock when dosed as directed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoesn't alter pH, KH, or nutrients:\u003c\/strong\u003e works purely on particle clarity, not water chemistry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500ml\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse case\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFreshwater aquariums only\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1ml per 10L of aquarium water\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMax. twice per week\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRequirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWater KH must be ≥ 2°dH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGraduated dosing cup (2.5–20ml)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eShake well before use. Dose 1ml per 10L of water, ideally 2–3 days after a water change if cloudiness appears. Add the solution slowly over 20–30 seconds in an area of strong water flow, away from fish, shrimp, and plants, and dose during the lighting period. Results typically appear within 6–12 hours — the water may look slightly hazier right before it clears completely, which is normal as particles clump together. Clean your filter and vacuum the substrate more frequently while treating persistent cloudiness.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eWill this harm my shrimp?\u003c\/dt\u003e\n  \u003cdd\u003eNo — MasterLine Crystal Clear is safe for shrimp and all freshwater livestock when dosed according to instructions (max twice weekly, correct KH).\u003c\/dd\u003e\n  \u003cdt\u003eCan I use it in a saltwater or reef tank?\u003c\/dt\u003e\n  \u003cdd\u003eNo, this product is formulated for freshwater aquariums only.\u003c\/dd\u003e\n  \u003cdt\u003eWhy does the water look worse right after dosing?\u003c\/dt\u003e\n  \u003cdd\u003eThe product first causes fine particles to clump together, which can briefly increase visible haze before your filter clears the larger clumps within 6-12 hours.\u003c\/dd\u003e\n  \u003cdt\u003eWhat if my water is still cloudy after dosing?\u003c\/dt\u003e\n  \u003cdd\u003eCheck that your filter is clean and running well — clarifiers only work if the filter can physically capture the clumped particles. Increase filter maintenance frequency if cloudiness persists.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"MasterLine","offers":[{"title":"Default Title","offer_id":49179658518858,"sku":null,"price":16.14,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-masterline-crystal-clear-57907008307530.png?v=1728905929"},{"product_id":"masterline-safe-water","title":"MasterLine Safe Water","description":"\u003cp\u003eProduct: MasterLine Safe Water\u003cbr\u003eBrand: MasterLine\u003cbr\u003eCategory: Aquarium Dechlorinator \/ Water Conditioner\u003cbr\u003eType: Liquid tap water treatment for aquarium use\u003c\/p\u003e\n\u003cp\u003eFunction:\u003cbr\u003e- Instantly neutralises chlorine and chloramines\u003cbr\u003e- Neutralises heavy metals in tap water\u003cbr\u003e- Protects beneficial bacteria during water changes (prevents de-cycling)\u003cbr\u003e- Eliminates need for pre-aeration\/standing water\u003c\/p\u003e\n\u003cp\u003eDosage: 1 ml \/ 30 L of new water\u003cbr\u003eApplication: dose before or during tank filling\u003c\/p\u003e\n\u003cp\u003eContains: chlorine, chloramine and heavy metals removal solutions\u003cbr\u003eConcentration: up to 15× more concentrated than comparable products\u003c\/p\u003e\n\u003cp\u003eSafe for: fish, shrimp, plants and all aquatic life\u003cbr\u003eIncluded: graduated measuring cup (2.5–20 ml)\u003c\/p\u003e\n\u003cp\u003eAvailable sizes: 100 ml, 250 ml, 500 ml\u003c\/p\u003e\n\u003cp\u003eManufacturer: MasterLine (Romania)\u003c\/p\u003e","brand":"MasterLine","offers":[{"title":"500 ml","offer_id":49180455010634,"sku":null,"price":16.13,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-500-ml-masterline-safe-water-57907008569674.png?v=1728905812"},{"product_id":"masterline-purity","title":"MasterLine Purity – Regenerable Filter Media for Crystal Clear Aquarium Water (250ml\/500ml)","description":"\u003ch2\u003eMasterLine Purity — Advanced Chemical Filter Media for Crystal-Clear Aquarium Water\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eMasterLine Purity is a regenerable chemical filtration media\u003c\/strong\u003e that absorbs fine dissolved organic compounds directly from aquarium water — the invisible particles that cause yellow tint, odor, and algae-feeding nutrients that mechanical and biological filtration alone can't remove.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does MasterLine Purity do?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAbsorbs dissolved organic matter (DOC) before it breaks down into ammonia and nitrite\u003c\/li\u003e\n  \u003cli\u003eClears yellow-tinted water and removes odors caused by decaying waste, food, or plant matter\u003c\/li\u003e\n  \u003cli\u003eIncreases dissolved oxygen concentration and intensifies the pearling effect on aquarium plants\u003c\/li\u003e\n  \u003cli\u003eSlows algae formation by reducing the organic nutrient load in the water column\u003c\/li\u003e\n  \u003cli\u003eFully regenerable — reusable multiple times instead of being discarded after one cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to use MasterLine Purity\u003c\/h3\u003e\n\u003cp\u003eRinse the granulate under running water, place it in a fine filter media bag (pairs perfectly with the \u003ca href=\"\/products\/masterline-zip-bag\"\u003eMasterLine Zip Bag\u003c\/a\u003e), and position it in your canister, sump, or hang-on filter. Dosage: \u003cstrong\u003e100 ml of Purity per 100 liters of aquarium water\u003c\/strong\u003e as a baseline for infrequent regeneration cycles.\u003c\/p\u003e\n\n\u003ch3\u003eHow to regenerate MasterLine Purity\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eRegenerate every 2–3 months, or sooner if the granulate turns visibly brown\/dark\u003c\/li\u003e\n  \u003cli\u003eSoak the media bag in a 5% bleach solution — use double the volume of bleach to media (e.g. 500 ml bleach for 250 ml Purity)\u003c\/li\u003e\n  \u003cli\u003eLeave for 1 hour, stirring every 10 minutes\u003c\/li\u003e\n  \u003cli\u003eRinse thoroughly, then soak for 24 hours in water with 50 ml dechlorinator\u003c\/li\u003e\n  \u003cli\u003eRepeat dechlorination until no bleach smell remains before returning it to the filter\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eSynthetic resin-based chemical filter media\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eVolumes available\u003c\/td\u003e\n\u003ctd\u003e250 ml \/ 500 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCompatible with\u003c\/td\u003e\n\u003ctd\u003eFreshwater and planted aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRegenerations\u003c\/td\u003e\n\u003ctd\u003eMultiple cycles with bleach solution\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAffects pH\/GH\/KH?\u003c\/td\u003e\n\u003ctd\u003eNo — does not strip trace elements or alter water hardness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs MasterLine Purity safe for shrimp and sensitive fish?\u003c\/strong\u003e\u003cbr\u003e\nYes. It only targets dissolved organics and does not alter pH, hardness, or trace nutrient levels, making it safe for shrimp, fish, and live plants.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan MasterLine Purity replace activated carbon?\u003c\/strong\u003e\u003cbr\u003e\nIt serves a similar clarifying role but is regenerable, unlike single-use carbon, making it more cost-effective over time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I replace MasterLine Purity?\u003c\/strong\u003e\u003cbr\u003e\nYou don't need to replace it — regenerate it with a bleach solution every 2–3 months for continued effectiveness.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is MasterLine Purity safe for shrimp and sensitive fish?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. MasterLine Purity only targets dissolved organic compounds and does not alter pH, hardness, or trace nutrient levels, making it safe for shrimp, fish, and live plants.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can MasterLine Purity replace activated carbon?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It performs a similar water-clarifying function but is regenerable rather than single-use, making it more cost-effective over time.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How often should MasterLine Purity be replaced?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It does not need replacing — regenerate it with a diluted bleach solution every 2-3 months for continued effectiveness.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"MasterLine","offers":[{"title":"250 ml","offer_id":49180458156362,"sku":null,"price":15.97,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-250-ml-masterline-purity-57907008340298.png?v=1728905967"},{"product_id":"masterline-multicolor-spring-cut","title":"MasterLine Multicolor Spring Cut","description":"\u003cp\u003eThe MasterLine Multicolor Spring Cut are compact spring-loaded aquascaping scissors designed for precise trimming in tight spaces, foreground areas, and detailed plant work in planted aquariums. The spring mechanism keeps the blades open between cuts, reducing hand fatigue during extended trimming sessions. Available in multiple colors for easy identification in a multi-scissors setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSpring-loaded design — blades auto-open between cuts for reduced fatigue\u003c\/li\u003e\n  \u003cli\u003eCompact size — ideal for tight spaces and foreground trimming\u003c\/li\u003e\n  \u003cli\u003eAvailable in multiple colors for easy tool identification\u003c\/li\u003e\n  \u003cli\u003eStainless steel blades — precise and durable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine Wave — wave-curved scissors for carpet plants\u003c\/li\u003e\n  \u003cli\u003eMasterLine All In One Golden — fertilizer for the plants you trim\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"Default Title","offer_id":49387497750858,"sku":null,"price":20.17,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-masterline-multicolor-spring-cut-58508102992202.png?v=1728905961"},{"product_id":"masterline-wave","title":"MasterLine Wave – Aquascaping Curved Scissors","description":"\u003cp\u003eThe MasterLine Wave is a professional aquascaping scissors with a wave-curved blade profile designed for trimming carpet plants, foreground species, and moss in planted aquariums. The wave shape allows a natural, flowing cut across uneven plant surfaces — avoiding the straight cut line that standard curved scissors leave, and producing a more organic-looking result in the aquascape. Made from stainless steel for durability and corrosion resistance.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWave-curved blade — natural-looking cut for carpet plants and moss\u003c\/li\u003e\n  \u003cli\u003eIdeal for HC Cuba, Glossostigma, Monte Carlo, and moss mats\u003c\/li\u003e\n  \u003cli\u003eStainless steel construction — corrosion-resistant\u003c\/li\u003e\n  \u003cli\u003eProfessional-grade spring mechanism for reduced hand fatigue\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePair with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMasterLine Multicolor Spring Cut — compact scissors for tight spaces\u003c\/li\u003e\n  \u003cli\u003eMasterLine All In One Golden — fertilizer for the plants you trim\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MasterLine","offers":[{"title":"Default Title","offer_id":49387524325706,"sku":null,"price":18.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-masterline-wave-58508105646410.png?v=1728905983"},{"product_id":"masterline-gh-plus","title":"MasterLine GH Plus – GH Mineral Booster for RO \u0026 Soft Water Aquariums","description":"\u003ch2\u003eMasterLine GH Plus — Mineral Booster for RO Water \u0026amp; Soft Water Aquariums\u003c\/h2\u003e\n\n\u003cp\u003eReverse osmosis (RO) water and naturally soft tap water are stripped of the minerals that many aquatic plants, fish, and shrimp need to thrive. MasterLine GH Plus is a 100% soluble salt mixture designed to remineralize this \"empty\" water — raising general hardness (GH) precisely, without touching carbonate hardness (KH), so you keep full control over your water parameters instead of adjusting both at once.\u003c\/p\u003e\n\n\u003ch3\u003eWhy hardness matters — and why this product is built the way it is\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalcium \u0026amp; magnesium in a 4:1 ratio:\u003c\/strong\u003e matches the balance most aquatic plants and livestock use most efficiently, rather than a generic mineral blend.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdds a touch of potassium:\u003c\/strong\u003e supports plant metabolism alongside the primary Ca\/Mg minerals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaises GH without raising KH:\u003c\/strong\u003e lets you dial in hardness independently of pH-buffering carbonate hardness — critical for shrimp keepers targeting specific GH\/KH combinations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for Caridina shrimp \u0026amp; soft-water species:\u003c\/strong\u003e many popular shrimp and soft-water fish need mineralized water below typical tap-water hardness, which this product provides precisely.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with all aquatic life\u003c\/strong\u003e including shrimp, when dosed as directed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFormat\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% soluble salt powder\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRO\/osmosis water \u0026amp; water with GH below 6°dH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 measuring spoon (~3g) per 15L → raises GH by 6°dGH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMineral profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCalcium \u0026amp; magnesium (4:1 ratio) + potassium\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEffect on KH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone — GH only\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMeasuring spoon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eFor fastest dissolution, add the salts gradually to a separate container of water while stirring vigorously, then pour the fully dissolved solution into the aquarium — this avoids undissolved granules settling on the substrate. Use one measuring spoon (~3g) per 15L of water to raise GH by approximately 6°dGH; adjust the amount based on your target hardness and current GH reading. Because the product is hygroscopic (absorbs moisture from air), reseal the container tightly and store it away from humidity between uses.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdl\u003e\n  \u003cdt\u003eWill this affect my KH or pH?\u003c\/dt\u003e\n  \u003cdd\u003eNo — MasterLine GH Plus is designed to raise general hardness (GH) only, without affecting carbonate hardness (KH) or destabilizing pH.\u003c\/dd\u003e\n  \u003cdt\u003eIs it safe for Caridina and Neocaridina shrimp?\u003c\/dt\u003e\n  \u003cdd\u003eYes, it's compatible with all forms of aquatic life including shrimp — just dose to match the specific GH range your shrimp species requires.\u003c\/dd\u003e\n  \u003cdt\u003eDo I need this if I use tap water?\u003c\/dt\u003e\n  \u003cdd\u003eOnly if your tap water's GH is naturally low (below 6°dH) or if you're mixing in RO\/osmosis water that needs remineralizing before use.\u003c\/dd\u003e\n  \u003cdt\u003eHow do I know how much to dose?\u003c\/dt\u003e\n  \u003cdd\u003eTest your current GH first, then use the dosage guide (1 spoon per 15L raises GH by 6°dGH) to calculate how many spoons you need to reach your target hardness.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"MasterLine","offers":[{"title":"250 ml","offer_id":49423426519370,"sku":null,"price":20.17,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":49423426552138,"sku":null,"price":30.21,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/Frame7_5_-min.png?v=1731648647"}],"url":"https:\/\/aquarium-boutique.com\/collections\/masterline.oembed","provider":"Aquarium Boutique","version":"1.0","type":"link"}