{"title":"2HR Aquarist","description":"\u003cp\u003e2Hr Aquarist APT fertilizers – science-based liquid nutrients for lush, healthy planted aquariums.\u003c\/p\u003e","products":[{"product_id":"2hr-aquarist-apt-1","title":"2Hr Aquarist APT 1 – All-In-One Liquid Fertilizer (No Nitrates or Phosphates)","description":"\u003c!-- ============================================================\n     2Hr Aquarist APT 1 — Detailed Product Description (EN)\n     Paste into: Shopify Admin \u003e Products \u003e APT 1 \u003e Description (HTML view)\n     ============================================================ --\u003e\n\n\u003ch2\u003eWhat is 2Hr Aquarist APT 1?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e2Hr Aquarist APT 1 (also labeled APT 1\/Zero) is a nitrate- and phosphate-free liquid fertilizer for planted aquariums\u003c\/strong\u003e, built for tanks where fish outnumber plants, or for new aquascapes running on nutrient-rich aquasoil during their first 1–3 months. It supplies potassium, magnesium, iron and a full set of chelated trace elements — everything plants need except the two nutrients your fish and substrate are already producing in excess.\u003c\/p\u003e\n\n\u003cp\u003eSkip APT 1 and keep dosing a standard \"complete\" fertilizer in a fish-heavy tank, and you're usually just feeding algae. APT 1 exists to close that exact gap.\u003c\/p\u003e\n\n\u003ch2\u003eWhy fish-heavy and new tanks need a different fertilizer\u003c\/h2\u003e\n\u003cp\u003eEvery fish meal that gets digested turns into ammonia, then nitrate. Every gram of aquasoil releases phosphate and ammonium as it breaks in. In a community tank stocked the way most people actually stock them, that's already more nitrogen and phosphorus than your plants can use. Layer a standard all-in-one fertilizer on top of that surplus, and the extra nitrate and phosphate don't disappear — they sit in the water column until algae find them first.\u003c\/p\u003e\n\n\u003cp\u003eAPT 1 is formulated around that reality. Same mineral backbone as \u003ca href=\"\/products\/2hr-aquarist-apt-3\"\u003eAPT 3\u003c\/a\u003e, the brand's flagship all-in-one — potassium, magnesium, iron, boron, copper, manganese, molybdenum, zinc — with nitrogen and phosphorus deliberately left at zero.\u003c\/p\u003e\n\n\u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero nitrate, zero phosphate\u003c\/strong\u003e — feeds plants without adding to an already-full nutrient bucket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e~3x more concentrated\u003c\/strong\u003e than typical off-the-shelf liquid fertilizers, dose for dose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChelated for wide pH bioavailability\u003c\/strong\u003e (EDTA\/DTPA\/EDDHA iron blend) — stays absorbable in both soft and hard water, instead of locking out\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShrimp-safe\u003c\/strong\u003e at the recommended dose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo CO₂ injection required\u003c\/strong\u003e — built for low-tech setups\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibrated pump included\u003c\/strong\u003e — 1 ml per press, no guessing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGuaranteed analysis\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNPK\u003c\/td\u003e\n\u003ctd\u003e0-0-7 (+1.4)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSoluble Potash (K₂O)\u003c\/td\u003e\n\u003ctd\u003e7%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnesium oxide (MgO)\u003c\/td\u003e\n\u003ctd\u003e1.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eIron (Fe, chelated EDTA\/DTPA\/EDDHA)\u003c\/td\u003e\n\u003ctd\u003e0.09%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTrace elements\u003c\/td\u003e\n\u003ctd\u003eBoron, Copper, Manganese, Molybdenum, Zinc\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho should use APT 1\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCommunity aquariums where fish outnumber plants\u003c\/li\u003e\n  \u003cli\u003eNew aquariums in their first 1–3 months, especially on aquasoil\u003c\/li\u003e\n  \u003cli\u003eLow-tech tanks running without CO₂\u003c\/li\u003e\n  \u003cli\u003eTanks with a history of algae from nutrient excess\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnce plants start outnumbering fish, or your aquasoil's initial nutrient release tapers off (usually 8–12 weeks in), that's your cue to move up to \u003ca href=\"\/products\/2hr-aquarist-apt-3\"\u003eAPT 3\u003c\/a\u003e — the complete NPK version in the same range. Running a high-tech, Estimative Index–style setup? \u003ca href=\"\/products\/2hr-aquarist-apt-complete\"\u003eAPT Complete\u003c\/a\u003e is the next step instead.\u003c\/p\u003e\n\n\u003ch2\u003eHow to dose APT 1\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDose \u003cstrong\u003e3 ml per 100 L of aquarium water, daily\u003c\/strong\u003e (1 pump press ≈ 1 ml)\u003c\/li\u003e\n  \u003cli\u003ePair with a \u003cstrong\u003e30% weekly water change\u003c\/strong\u003e for best results\u003c\/li\u003e\n  \u003cli\u003eA 300 ml bottle lasts roughly \u003cstrong\u003e3 months\u003c\/strong\u003e in a 115 L (30 gal) aquarium\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eExpert tip\u003c\/h2\u003e\n\u003cp\u003eIn a fresh aquasoil setup, resist the urge to add extra nitrate or phosphate even if growth looks slow at first. The soil is already releasing both as it settles in — APT 1's job is to fill the gaps (potassium, magnesium, iron, trace elements) without tipping the tank into nutrient excess. Reassess after 8–12 weeks, once the soil's initial release has calmed down.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is APT 1 used for?\u003c\/h3\u003e\n\u003cp\u003eAPT 1 is a liquid fertilizer for aquariums that already have enough nitrate and phosphate from fish waste or a nutrient-rich substrate. It supplies potassium, magnesium, iron and trace elements without adding more nitrogen or phosphorus.\u003c\/p\u003e\n\n\u003ch3\u003eIs APT 1 safe for shrimp?\u003c\/h3\u003e\n\u003cp\u003eYes. APT 1 is safe for shrimp and other sensitive invertebrates when dosed as recommended.\u003c\/p\u003e\n\n\u003ch3\u003eWhen should I switch from APT 1 to APT 3?\u003c\/h3\u003e\n\u003cp\u003eTypically after the first 1–3 months in a new aquasoil setup, or as soon as plants outnumber fish and the tank needs a complete NPK source.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use APT 1 without CO₂ injection?\u003c\/h3\u003e\n\u003cp\u003eYes — APT 1 is designed specifically for low-tech, non-CO₂ aquariums.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between APT 1 and APT 3?\u003c\/h3\u003e\n\u003cp\u003eAPT 1 leaves out nitrates and phosphates and suits fish-heavy or newly set up tanks. APT 3 is the complete NPK version, built for plant-heavy aquariums where the substrate alone can't keep up with nitrogen and phosphorus demand.\u003c\/p\u003e\n\n\u003ch3\u003eHow long does one bottle last?\u003c\/h3\u003e\n\u003cp\u003eA 300 ml bottle lasts approximately 3 months in a 115 L aquarium at the standard 3 ml per 100 L daily dose.\u003c\/p\u003e","brand":"2HR Aquarist","offers":[{"title":"200 ml","offer_id":49390206386506,"sku":null,"price":15.9,"currency_code":"EUR","in_stock":false},{"title":"300 ml","offer_id":49390206419274,"sku":null,"price":21.9,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":49390206452042,"sku":null,"price":31.9,"currency_code":"EUR","in_stock":false},{"title":"1000 ml","offer_id":49390206484810,"sku":null,"price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-2hr-aquarist-apt-1-58553954730314.png?v=1729084374"},{"product_id":"2hr-aquarist-apt-3","title":"2Hr Aquarist APT 3 – All-in-One Complete Fertilizer for Planted Aquariums","description":"\u003ch2\u003eWhat Is 2Hr Aquarist APT 3?\u003c\/h2\u003e\n\u003cp\u003e2Hr Aquarist APT 3 (also known as APT Complete) is an all-in-one liquid fertilizer for planted aquariums, developed by aquascaper Dennis Wong's Singapore-based brand The 2Hr Aquarist. It combines nitrogen, phosphorus, potassium (NPK), magnesium, and a full spectrum of trace elements — including boron, copper, manganese, molybdenum, and zinc — in a single dose. It is the go-to macro and micro fertilizer for hobbyists who want vibrant plant color and low algae without juggling multiple bottles.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Aquascapers Choose APT 3\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRicher plant color:\u003c\/strong\u003e A calibrated, slightly nitrate-limiting ratio pushes red and colorful plant species into deeper, more vivid tones.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFewer algae problems:\u003c\/strong\u003e Balanced nutrient delivery removes the swings that typically trigger algae outbreaks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigher potency:\u003c\/strong\u003e Roughly 3x more concentrated than conventional fertilizers designed decades ago for simpler, hardier plants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-bottle simplicity:\u003c\/strong\u003e No need to dose separate macro and micro fertilizers — APT 3 covers both.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrusted by competitive aquascapers:\u003c\/strong\u003e Used by award-winning aquascapers across 20+ countries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDosage \u0026amp; Usage\u003c\/h2\u003e\n\u003cp\u003eDose 3ml per 100L of aquarium water daily, or alternatively 5ml per 100L four times a week. Always dose after a water change or top-off, and turn on your filter\/circulation to distribute nutrients evenly.\u003c\/p\u003e\n\n\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100ml Starter Pack\u003c\/strong\u003e (with calibrated dropper) — lasts ~3 months for an 8 gal \/ 30L tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e200ml\u003c\/strong\u003e — lasts ~3 months for an 18 gal \/ 70L tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e300ml Standard Pack\u003c\/strong\u003e (with calibrated pump, 1ml per press) — lasts ~3 months for a 30 gal \/ 115L tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e500ml\u003c\/strong\u003e — lasts ~3 months for a 50 gal \/ 190L tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1000ml\u003c\/strong\u003e — lasts ~3 months for a 100 gal \/ 380L tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Inside\u003c\/h2\u003e\n\u003cp\u003eAPT 3 is a liquid inorganic macronutrient fertilizer containing NPK and magnesium, plus micronutrients and trace amounts of boron (B), copper (Cu), manganese (Mn), molybdenum (Mo), and zinc (Zn).\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs APT 3 suitable for tanks with fish?\u003c\/h3\u003e\n\u003cp\u003eYes. APT 3 is formulated for planted aquascapes that also house a small to moderate number of fish. For tanks with heavier fish loads and fewer plants, 2Hr Aquarist recommends APT 1 instead.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use APT 3 with CO2 or without CO2?\u003c\/h3\u003e\n\u003cp\u003eAPT 3 works in both CO2-injected and low-tech (non-CO2) planted tanks, though nutrient uptake and results are typically faster with CO2 supplementation.\u003c\/p\u003e\n\n\u003ch3\u003eHow is APT 3 different from APT 1?\u003c\/h3\u003e\n\u003cp\u003eAPT 3 is designed for tanks with more plants and fewer fish, focused on maximizing plant color and growth. APT 1 is designed for tanks with more fish and fewer plants, including new tanks under 3 months old running aquasoil.\u003c\/p\u003e\n\n\u003ch3\u003eDoes APT 3 come with a dosing pump?\u003c\/h3\u003e\n\u003cp\u003eThe 300ml Standard Pack includes a calibrated pump (1ml per press) and the 100ml Starter Pack includes a calibrated dropper. The 200ml, 500ml, and 1000ml sizes do not include a pump.\u003c\/p\u003e","brand":"2HR Aquarist","offers":[{"title":"200 ml","offer_id":49391121957194,"sku":null,"price":15.9,"currency_code":"EUR","in_stock":false},{"title":"300 ml","offer_id":49391121989962,"sku":null,"price":21.9,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":49391122022730,"sku":null,"price":31.9,"currency_code":"EUR","in_stock":false},{"title":"1000 ml","offer_id":49391122055498,"sku":null,"price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/2Hr_Aquarist_APT_3_All-in-One_Complete_Fertilizer.png?v=1764361231"},{"product_id":"2hr-aquarist-apt-fix","title":"2Hr Aquarist APT FIX – Effective Algae Remover","description":"\u003ch2\u003e2Hr Aquarist APT FIX – Effective Algae Remover\u003c\/h2\u003e\n\u003cp\u003eAPT FIX is a targeted algae treatment for planted aquariums, built to knock out black beard algae (BBA), hair algae, string algae, fuzz algae, and most forms of filamentous algae — the stubborn types that shrugging off a water change and a good scrub-down.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes APT FIX Different\u003c\/h3\u003e\n\u003cp\u003eThe active ingredient is 3% epoxy aldehydes, which deactivate algae cells by binding directly to their proteins. Unlike copper-based algaecides, APT FIX doesn't accumulate in the aquarium environment — it biodegrades completely within 12–24 hours, so it doesn't build up in your substrate or filter media over repeated treatments.\u003c\/p\u003e\n\u003cp\u003eIt's applied with the included spot-dosing pipette directly onto affected areas, rather than dosed across the whole tank. That targeted approach means less exposure for healthy plants, fish, and invertebrates, and a more concentrated hit on the algae you're actually trying to remove.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTargets black beard algae, hair algae, string algae, fuzz algae, and cyanobacteria (BGA)\u003c\/li\u003e\n\u003cli\u003eSpot-dosing pipette included — treat problem areas directly instead of dosing the whole tank\u003c\/li\u003e\n\u003cli\u003eNo copper or biocides — safe for repeated use at recommended doses\u003c\/li\u003e\n\u003cli\u003eFully biodegrades within 12–24 hours, leaving no residue buildup\u003c\/li\u003e\n\u003cli\u003eSafe for fish and shrimp when used as directed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive ingredient:\u003c\/strong\u003e 3% epoxy aldehydes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpot dose:\u003c\/strong\u003e Up to 1 ml per 10 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiodegradation:\u003c\/strong\u003e Complete within 12–24 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for:\u003c\/strong\u003e Fish and shrimp at recommended doses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Calibrated spot-dosing pipette\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Algae Does APT FIX Treat?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlack beard algae (BBA)\u003c\/li\u003e\n\u003cli\u003eHair algae, fuzz algae, and string algae\u003c\/li\u003e\n\u003cli\u003eCyanobacteria (BGA \/ blue-green algae)\u003c\/li\u003e\n\u003cli\u003eMost forms of green and red filamentous algae\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Do not apply APT FIX directly onto mosses (Java moss and similar), liverworts (Riccardia, Riccia), Vallisneria, or other delicate plant species — the concentrated spot dose can damage them. For algae on or near these plants, use APT FIXLITE instead.\u003c\/p\u003e\n\n\u003ch3\u003eHow to Apply\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePause the filter before dosing\u003c\/li\u003e\n\u003cli\u003eSpot-dose with the included pipette onto affected areas — up to 1 ml per 10 litres of tank water\u003c\/li\u003e\n\u003cli\u003eWait 12–24 hours\u003c\/li\u003e\n\u003cli\u003ePerform a 50% water change if needed\u003c\/li\u003e\n\u003cli\u003eRepeat every 24 hours if necessary\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eAlgae treatment only buys you time — it doesn't fix the underlying cause. Black beard algae and hair algae usually point to unstable CO₂, excess light, or fluctuating nutrients rather than a lack of \"algae killer.\" Use APT FIX to clear the current outbreak, then check your lighting duration, CO₂ consistency, and dosing routine so it doesn't come straight back.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat types of algae does APT FIX remove?\u003c\/h4\u003e\n\u003cp\u003eIt targets black beard algae, hair algae, fuzz algae, string algae, cyanobacteria, and most other filamentous algae types.\u003c\/p\u003e\n\u003ch4\u003eIs APT FIX safe for fish and shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes, when used at the recommended spot dose of up to 1 ml per 10 litres.\u003c\/p\u003e\n\u003ch4\u003eCan I use APT FIX on moss or delicate plants?\u003c\/h4\u003e\n\u003cp\u003eNo. Avoid direct application on mosses, liverworts, Vallisneria, and similarly delicate species. Use APT FIXLITE for algae growing on or near these plants instead.\u003c\/p\u003e\n\u003ch4\u003eDoes APT FIX leave any residue in the tank?\u003c\/h4\u003e\n\u003cp\u003eNo. The active ingredient fully biodegrades within 12–24 hours and doesn't accumulate with repeated use.\u003c\/p\u003e\n\u003ch4\u003eHow often can I dose APT FIX?\u003c\/h4\u003e\n\u003cp\u003eIt can be repeated every 24 hours if needed, though most outbreaks respond within one to a few treatments combined with a water change.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAPT 3 or APT 1 – to restore nutritional balance after treatment\u003c\/li\u003e\n\u003cli\u003eAPT Pure – water conditioner for the water change after dosing\u003c\/li\u003e\n\u003cli\u003eAPT FIXLITE – gentler algae treatment safe for moss and delicate plants\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"2HR Aquarist","offers":[{"title":"200 ml","offer_id":49391611478346,"sku":null,"price":15.9,"currency_code":"EUR","in_stock":false},{"title":"300 ml","offer_id":49391611511114,"sku":null,"price":21.9,"currency_code":"EUR","in_stock":true},{"title":"500 ml","offer_id":49391611543882,"sku":null,"price":31.9,"currency_code":"EUR","in_stock":true},{"title":"1000 ml","offer_id":49391611576650,"sku":null,"price":54.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-200-ml-2hr-aquarist-apt-fix-58553898303818.png?v=1729084456"},{"product_id":"2hr-aquarist-apt-pure","title":"2Hr Aquarist APT Pure","description":"\u003ch2\u003e2Hr Aquarist APT Pure – Water Conditioner\u003c\/h2\u003e\n\u003cp\u003eAPT Pure is a 360° water conditioner that handles chlorine, chloramines, heavy metals, and nitrogen compounds in one super-concentrated dose. It's built to take tap water — with whatever it happens to be carrying that week — and make it safe for fish, shrimp, and the beneficial bacteria your filter depends on.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes APT Pure Different\u003c\/h3\u003e\n\u003cp\u003eMost conditioners handle chlorine and chloramines and stop there. APT Pure also detoxifies heavy metals such as copper leaching from old pipes, and neutralizes ammonia, nitrites, and nitrates — useful not just for routine water changes but for genuine emergencies like ammonia spikes. It's formulated with aloe vera extract, which helps reduce stress on fish during water changes and transport.\u003c\/p\u003e\n\u003cp\u003eThe concentration is high enough that a little goes a very long way: 1 ml treats 60 litres of water at the standard dose, and a 300 ml bottle (with pump) treats over 18,000 litres over its lifetime.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNeutralizes chlorine, chloramines, heavy metals, ammonia, nitrites, and nitrates in one dose\u003c\/li\u003e\n\u003cli\u003eHighly concentrated — 1 ml treats 60 litres\u003c\/li\u003e\n\u003cli\u003eContains aloe vera extract to reduce stress during water changes\u003c\/li\u003e\n\u003cli\u003eEmergency dosing option for ammonia spikes\u003c\/li\u003e\n\u003cli\u003eSafe for shrimp, sensitive fish, and beneficial filter bacteria\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAction:\u003c\/strong\u003e Neutralizes Cl₂, chloramines, heavy metals, NH₃, NO₂, NO₃\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard dose:\u003c\/strong\u003e 1 ml per 60 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency dose:\u003c\/strong\u003e Up to 5 ml per 60 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditive:\u003c\/strong\u003e Aloe vera extract\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe for:\u003c\/strong\u003e Shrimp, sensitive fish, and beneficial bacteria\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 ml bottle treats:\u003c\/strong\u003e Approximately 18,000 litres\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Should Use APT Pure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAnyone doing regular water changes with tap water\u003c\/li\u003e\n\u003cli\u003eAreas where tap water may carry heavy metals from old plumbing\u003c\/li\u003e\n\u003cli\u003eTanks experiencing ammonia spikes — new tank syndrome, overfeeding, overstocking\u003c\/li\u003e\n\u003cli\u003eTransporting or acclimating new fish, shrimp, or plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDosing Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandard dose: 1 ml per 60 litres of new water, added before or during a water change\u003c\/li\u003e\n\u003cli\u003eEmergency dose: up to 5 ml per 60 litres for rapid detoxification of elevated ammonia\u003c\/li\u003e\n\u003cli\u003eA 300 ml bottle (with the included pump) lasts through roughly 18,000 litres of treated water\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eDon't save APT Pure only for water changes — keep a bottle within reach for emergencies. If you spot fish gasping at the surface or acting unusually lethargic after overfeeding or a filter mishap, an emergency dose can buy you time to test and fix the underlying ammonia spike before it turns serious.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat does APT Pure remove from water?\u003c\/h4\u003e\n\u003cp\u003eIt neutralizes chlorine, chloramines, heavy metals such as copper, and nitrogen compounds including ammonia, nitrites, and nitrates.\u003c\/p\u003e\n\u003ch4\u003eHow much APT Pure should I use?\u003c\/h4\u003e\n\u003cp\u003eUse 1 ml per 60 litres for a standard water change. In emergencies with elevated ammonia, this can be increased up to 5 ml per 60 litres.\u003c\/p\u003e\n\u003ch4\u003eIs APT Pure safe for shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes, it's formulated to be safe for shrimp, sensitive fish, and the beneficial bacteria in your filter.\u003c\/p\u003e\n\u003ch4\u003eHow long does a bottle of APT Pure last?\u003c\/h4\u003e\n\u003cp\u003eA 300 ml bottle treats roughly 18,000 litres of water at the standard dose.\u003c\/p\u003e\n\u003ch4\u003eCan I use APT Pure to treat an ammonia spike?\u003c\/h4\u003e\n\u003cp\u003eYes. The emergency dose (up to 5 ml per 60 litres) is designed specifically for situations with elevated ammonia, such as new tank syndrome or overfeeding.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAPT 1 or APT 3 – add fertilizer after conditioning the water change water\u003c\/li\u003e\n\u003cli\u003eAPT Start – when setting up a new aquarium with tap water\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"2HR Aquarist","offers":[{"title":"Starter 100 ml","offer_id":49566406279498,"sku":null,"price":11.9,"currency_code":"EUR","in_stock":false},{"title":"Standard","offer_id":49566406312266,"sku":null,"price":21.9,"currency_code":"EUR","in_stock":false},{"title":"200 ml","offer_id":49566406345034,"sku":null,"price":11.9,"currency_code":"EUR","in_stock":false},{"title":"500 ml","offer_id":49566406377802,"sku":null,"price":31.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-starter-100-ml-2hr-aquarist-apt-pure-58672050012490.png?v=1731724901"},{"product_id":"2hr-aquarist-apt-sky","title":"2HR Aquarist APT SKY – Remineralizer for Aquascaping","description":"\u003ch2\u003e2HR Aquarist APT SKY – Remineralizer for Aquascaping\u003c\/h2\u003e\n\u003cp\u003eAPT SKY is a GH booster and remineralizer built specifically for RO\/RODI water in planted aquariums. It raises general hardness (GH) by replenishing calcium and magnesium without touching NPK values, KH, or pH — a distinction that matters if you're running a carefully balanced fertilization routine and don't want your remineralizer interfering with it.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes APT SKY Different\u003c\/h3\u003e\n\u003cp\u003eMost remineralizers on the market shift more than just GH — some nudge KH and pH along with it, which can complicate dosing for aquarists who need those parameters to stay put. APT SKY is formulated to raise GH in isolation, so it plays well alongside whatever fertilization and CO₂ setup you're already running.\u003c\/p\u003e\n\u003cp\u003eIt's also roughly three times more concentrated than standard remineralizers. Each 5 ml (or 3.5 g) added to 60 litres delivers 12 ppm calcium and 3.5 ppm magnesium, raising GH by about 2.5 dGH — a predictable, repeatable increment rather than guesswork.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRaises GH without altering KH, pH, or NPK levels\u003c\/li\u003e\n\u003cli\u003eHighly concentrated — a small dose covers a large volume\u003c\/li\u003e\n\u003cli\u003eFast-dissolving, non-caking powder formula\u003c\/li\u003e\n\u003cli\u003eSafe for shrimp and demanding soft-water plant species\u003c\/li\u003e\n\u003cli\u003ePredictable dosing: 5 ml per 60 litres raises GH by roughly 2.5 dGH\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium (Ca):\u003c\/strong\u003e 21.5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium (Mg):\u003c\/strong\u003e 5.4%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIron (Fe):\u003c\/strong\u003e 0.06%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrace elements:\u003c\/strong\u003e Boron, Copper, Manganese, Molybdenum, Zinc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeaweed extract:\u003c\/strong\u003e Less than 1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Powder (fast-dissolving, non-caking)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Should Use APT SKY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAnyone using reverse osmosis (RO\/RODI) water — remineralization is essential before this water is aquarium-safe\u003c\/li\u003e\n\u003cli\u003eSoft water aquariums housing shrimp or demanding plant species\u003c\/li\u003e\n\u003cli\u003eTanks mixing shrimp and hard-water plants alongside soft-water species\u003c\/li\u003e\n\u003cli\u003eAquariums with GH below 5 dGH — the recommended target range is 5–8 dGH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your fish or invertebrates also need a moderate KH buffer and stable pH — for example guppies, mollies, or snails — APT SKY PLUS is the better fit, since it raises KH to roughly 2 dKH and buffers pH to 7.2–7.6 alongside GH.\u003c\/p\u003e\n\n\u003ch3\u003eDosing Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor RO\/RODI water: 15 ml per 60 litres as a starting dose\u003c\/li\u003e\n\u003cli\u003eFor soft tap water: test your current GH and use 2HR Aquarist's dosing calculator to fine-tune the amount\u003c\/li\u003e\n\u003cli\u003eDuring water changes, dose based on the volume of new water added, not the total tank volume\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eDon't guess your GH — test it before your first dose, and again a day after dosing, especially if you're new to remineralizing RO water. Building up GH gradually over a couple of water changes is gentler on shrimp and fish than pushing straight to your target in one go, particularly if the tank has been running very soft for a while.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes APT SKY affect KH or pH?\u003c\/h4\u003e\n\u003cp\u003eNo. APT SKY is formulated to raise GH only, without shifting KH, pH, or NPK levels.\u003c\/p\u003e\n\u003ch4\u003eIs APT SKY safe for shrimp?\u003c\/h4\u003e\n\u003cp\u003eYes, it's specifically suited to soft water aquariums with shrimp and demanding plant species.\u003c\/p\u003e\n\u003ch4\u003eHow much APT SKY should I use for RO water?\u003c\/h4\u003e\n\u003cp\u003eStart with 15 ml per 60 litres of RO\/RODI water, then test and adjust based on your target GH.\u003c\/p\u003e\n\u003ch4\u003eWhat's the difference between APT SKY and APT SKY PLUS?\u003c\/h4\u003e\n\u003cp\u003eAPT SKY raises GH only, leaving KH and pH unchanged — ideal for tetras, soft-water plants, and shrimp. APT SKY PLUS also raises KH moderately and buffers pH, better suited to livebearers and snails.\u003c\/p\u003e\n\u003ch4\u003eHow do I dose APT SKY during regular water changes?\u003c\/h4\u003e\n\u003cp\u003eBase the dose on the volume of new water you're adding, not the total tank volume.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAPT 3 or APT 1 – for plant fertilization\u003c\/li\u003e\n\u003cli\u003eAPT Start – when setting up a new aquarium with RO water\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"2HR Aquarist","offers":[{"title":"150 gr","offer_id":49444526752074,"sku":null,"price":17.9,"currency_code":"EUR","in_stock":true},{"title":"800 gr","offer_id":49444526784842,"sku":null,"price":17.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-150-gr-2hr-aquarist-apt-sky-58672125313354.png?v=1731724909"},{"product_id":"2hr-aquarist-apt-jazz","title":"2Hr Aquarist APT Jazz","description":"\u003ch2\u003e2Hr Aquarist APT Jazz – Aquatic Root Tabs\u003c\/h2\u003e\n\u003cp\u003eAPT Jazz are high-performance root tabs formulated specifically for aquariums with depleted or mature aquasoil. Aquasoil loses its nutritional reserves over time, and APT Jazz replenishes them directly at the root zone — without disrupting your water column parameters or risking an ammonia spike.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes APT Jazz Different\u003c\/h3\u003e\n\u003cp\u003eThe tabs are built with a fully water-soluble NPK formula of 16-0.2-0, delivering nitrogen, magnesium, iron, and micronutrients right where roots can use them. That matters because most root tabs on the market are repurposed terrestrial osmocote-type products, formulated for houseplants, not aquariums — and they can trigger dangerous ammonia spikes when submerged. APT Jazz is designed from the ground up for aquatic use, so it avoids that risk entirely.\u003c\/p\u003e\n\u003cp\u003eThe clay matrix releases nutrients slowly and consistently over roughly two months, giving heavy root feeders — Cryptocoryne, Amazon swords, and other rooted stem and rosette plants — a steady nutrient source instead of an initial dump followed by nothing.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully aquatic formulation — no ammonia spike risk, unlike terrestrial root tabs\u003c\/li\u003e\n\u003cli\u003eSlow, steady nutrient release for up to 2 months per tab\u003c\/li\u003e\n\u003cli\u003eTargets nutrient-depleted or mature aquasoil directly at the root zone\u003c\/li\u003e\n\u003cli\u003eSupports fuller stem growth and more intense coloration in demanding red plants\u003c\/li\u003e\n\u003cli\u003eSafe alongside regular water-column fertilization\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Solid root tabs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNPK:\u003c\/strong\u003e 16-0.2-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen (N):\u003c\/strong\u003e 16% (3% nitrate + 13% ammoniacal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhosphorus pentoxide (P₂O₅):\u003c\/strong\u003e 0.2%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium oxide (MgO):\u003c\/strong\u003e 0.6%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIron (Fe, EDTA-chelated):\u003c\/strong\u003e 0.01%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrace elements:\u003c\/strong\u003e B, Cu, Mn, Mo, Zn\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Should Use APT Jazz\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAquariums with aquasoil older than 6–12 months\u003c\/li\u003e\n\u003cli\u003eTanks where plant growth has noticeably slowed despite regular water-column fertilization\u003c\/li\u003e\n\u003cli\u003eAquascapers wanting fuller, denser growth in stem plants\u003c\/li\u003e\n\u003cli\u003eAnyone struggling to develop intense red coloration in demanding species\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInsert 1 tab per 2.5 square inches (roughly 16 cm²) of substrate\u003c\/li\u003e\n\u003cli\u003ePush the tab to a depth greater than 1 inch (2.5 cm), close to the plant's root zone\u003c\/li\u003e\n\u003cli\u003eReplenish every 2 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Tip\u003c\/h3\u003e\n\u003cp\u003eIf growth has slowed but your water-column dosing hasn't changed, the substrate — not the water — is usually the bottleneck. Heavy root feeders like swordplants and crypts pull most of their nutrition through roots rather than leaves, so liquid fertilizer alone often can't fix a depleted substrate. A few well-placed root tabs frequently make a bigger visible difference than increasing your liquid dose.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWill APT Jazz cause an ammonia spike?\u003c\/h4\u003e\n\u003cp\u003eNo. Unlike terrestrial osmocote-type root tabs, APT Jazz is formulated specifically for aquatic use and is designed to avoid triggering ammonia spikes.\u003c\/p\u003e\n\u003ch4\u003eHow long does one root tab last?\u003c\/h4\u003e\n\u003cp\u003eEach tab releases nutrients steadily for up to 2 months before needing replacement.\u003c\/p\u003e\n\u003ch4\u003eHow many root tabs do I need?\u003c\/h4\u003e\n\u003cp\u003eUse 1 tab per roughly 2.5 square inches (16 cm²) of substrate, placed near the roots of heavy-feeding plants.\u003c\/p\u003e\n\u003ch4\u003eCan I use APT Jazz alongside liquid fertilizer?\u003c\/h4\u003e\n\u003cp\u003eYes. Root tabs target the substrate directly, while liquid fertilizers like APT 3 feed through the water column — they're complementary, not competing.\u003c\/p\u003e\n\u003ch4\u003eWhen should I start using root tabs?\u003c\/h4\u003e\n\u003cp\u003eOnce your aquasoil is roughly 6–12 months old, or as soon as you notice plant growth slowing despite consistent water-column dosing.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAPT 3 – for complete liquid fertilization in planted tanks\u003c\/li\u003e\n\u003cli\u003eAPT Start – when setting up a new aquarium\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"2HR Aquarist","offers":[{"title":"Small - 18 pcs","offer_id":49444526489930,"sku":null,"price":17.9,"currency_code":"EUR","in_stock":true},{"title":"Large - 54 pcs","offer_id":49444526522698,"sku":null,"price":39.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-small-18-pcs-2hr-aquarist-apt-jazz-58624539361610.png?v=1731724877"},{"product_id":"2hr-aquarist-apt-start","title":"2Hr Aquarist APT Start – Substrate Enricher \u0026 Starter Bacteria (45g)","description":"\u003cp\u003e\u003cstrong\u003e2Hr Aquarist APT Start\u003c\/strong\u003e is a universal substrate enricher with starter bacteria, designed to solve the most common problems during the first weeks of a new planted aquarium: plant melting, root shock, cloudy water and early algae outbreaks.\u003c\/p\u003e\n\n\u003ch2\u003eWhat is APT Start?\u003c\/h2\u003e\n\u003cp\u003eAPT Start is a solid mineral fertiliser placed directly beneath the substrate before the aquarium is filled with water. It combines two functions: it enriches the substrate with essential nutrients and accelerates the nitrogen cycle with a concentrated blend of beneficial bacteria.\u003c\/p\u003e\n\n\u003ch3\u003eKey Facts\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e solid mineral fertiliser with beneficial bacteria\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNPK formula:\u003c\/strong\u003e 8.8-0-0.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoverage:\u003c\/strong\u003e 1 sachet (45 g) per 60×30 cm of substrate area\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e placed beneath the substrate – not dosed into the water\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e any type of aquasoil or inert substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComposition \u0026amp; Guaranteed Analysis\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTotal Nitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e8.8%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e— Nitrate Nitrogen\u003c\/td\u003e\n\u003ctd\u003e1.8%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e— Ammoniacal Nitrogen\u003c\/td\u003e\n\u003ctd\u003e7%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePotassium Oxide (K\u003csub\u003e2\u003c\/sub\u003eO)\u003c\/td\u003e\n\u003ctd\u003e0.6%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCalcium Oxide (CaO)\u003c\/td\u003e\n\u003ctd\u003e4.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMagnesium Oxide (MgO)\u003c\/td\u003e\n\u003ctd\u003e1.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChelated Iron (EDTA)\u003c\/td\u003e\n\u003ctd\u003e0.01%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eIngredients:\u003c\/strong\u003e clay, calcium sulphate, ammonium sulphate, potassium sulphate, magnesium sulphate, magnesium nitrate. All macro- and micronutrients are fully water-soluble.\u003c\/p\u003e\n\n\u003ch2\u003eHow Does APT Start Work?\u003c\/h2\u003e\n\u003cp\u003eNutrients are released gradually from the clay matrix directly into the root zone, providing plants with stable, long-lasting nutrition instead of a sharp initial spike that can burn the roots. At the same time, the starter bacteria colonise the substrate and speed up the establishment of a stable nitrogen cycle, reducing the ammonia spikes typical of new aquariums.\u003c\/p\u003e\n\n\u003ch2\u003eWho Is APT Start For?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNew aquariums planted with aquasoil or inert substrate\u003c\/li\u003e\n  \u003cli\u003eBeginners who want to avoid the typical problems of starting a new tank\u003c\/li\u003e\n  \u003cli\u003eExperienced aquarists looking for a richer, more productive substrate – regardless of aquasoil brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eIs APT Start a liquid or solid fertiliser?\u003c\/h3\u003e\n\u003cp\u003eAPT Start is a solid mineral fertiliser. It is not dosed into the water – it is spread beneath the substrate before the aquarium is filled.\u003c\/p\u003e\n\n\u003ch3\u003eHow much APT Start do I need?\u003c\/h3\u003e\n\u003cp\u003eOne 45 g sachet covers an area of approximately 60×30 cm. For larger aquariums, use multiple sachets in proportion to the base area.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use APT Start with any aquasoil?\u003c\/h3\u003e\n\u003cp\u003eYes. APT Start is designed to improve the performance of any substrate brand, including inert (nutrient-free) substrates such as sand or gravel.\u003c\/p\u003e\n\n\u003ch3\u003eWhat should I use after APT Start?\u003c\/h3\u003e\n\u003cp\u003eOnce the plants have rooted and the aquarium has completed its initial cycle (usually 1–4 weeks), most aquarists switch to a liquid fertiliser such as 2Hr Aquarist APT 3 for regular water column dosing.\u003c\/p\u003e\n\n\u003ch3\u003eDoes APT Start help prevent algae?\u003c\/h3\u003e\n\u003cp\u003eIndirectly – yes. By reducing root shock and nutrient deficiency during the critical first weeks, plants establish faster and outcompete algae for available nutrients.\u003c\/p\u003e","brand":"2HR Aquarist","offers":[{"title":"Default Title","offer_id":49429269184842,"sku":null,"price":17.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-2hr-aquarist-apt-start-58624542245194.png?v=1731724911"}],"url":"https:\/\/aquarium-boutique.com\/collections\/2hr-aquarist.oembed","provider":"Aquarium Boutique","version":"1.0","type":"link"}