{"title":"CO2 Equipment","description":"\u003cp\u003ePremium CO₂ equipment for planted tanks: diffusers, drop checkers, tubing and accessories. Boost plant growth with reliable CO₂ systems.\u003c\/p\u003e","products":[{"product_id":"high-quality-co2-generator","title":"High Quality CO2 Generator","description":"\u003cp\u003eIntroducing the High Quality CO2 Generator - the ultimate solution for optimal aquarium plant tank care. With patented technology and advanced chemical neutralization, the Ziss CO2 ZC-II provides precise control over CO2 generation speed for superior plant growth. Say goodbye to inconsistent levels and hello to a healthy, flourishing tank environment.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/9pAH5UNx_gw?si=5PnZBlAK7hwdEjAX\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"ZISS","offers":[{"title":"Default Title","offer_id":47723272307018,"sku":null,"price":25.32,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-high-quality-co2-generator-57647139520842.png?v=1728906002"},{"product_id":"ziss-co2-generation-kit-zcr-160","title":"Ziss CO₂ Generation Kit ZCR-160","description":"\u003cp\u003eComplete bio CO₂ generation kit – safe, stable and ideal for tanks up to ~120 liters.\u003c\/p\u003e","brand":"ZISS","offers":[{"title":"Default Title","offer_id":49387563745610,"sku":null,"price":9.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/aquarium-boutique-default-title-ziss-co2-generation-kit-zcr-160-58624444170570.png?v=1729483122"},{"product_id":"nano-co2-diffusor-s","title":"Nano CO2 Diffusor (S)","description":"\u003cp\u003eThe \u003cstrong data-start=\"1682\" data-end=\"1707\"\u003eNano CO₂ Diffuser (S)\u003c\/strong\u003e is designed for \u003cstrong data-start=\"1724\" data-end=\"1751\"\u003emaximum CO₂ dissolution\u003c\/strong\u003e in planted aquariums up to \u003cstrong data-start=\"1779\" data-end=\"1793\"\u003e100 liters\u003c\/strong\u003e. Its advanced ceramic membrane produces an ultra-fine mist of microbubbles, ensuring \u003cstrong data-start=\"1879\" data-end=\"1907\"\u003eefficient CO₂ absorption\u003c\/strong\u003e for lush and vibrant plant growth\u003c\/p\u003e","brand":"Aquarium Boutique","offers":[{"title":"Default Title","offer_id":50336140460362,"sku":null,"price":12.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/Frame_2_4_1.jpg?v=1768480044"},{"product_id":"nano-co2-diffusor-l","title":"Nano CO2 Diffusor (L)","description":"\u003cp\u003eThe \u003cstrong data-start=\"2007\" data-end=\"2032\"\u003eNano CO₂ Diffuser (L)\u003c\/strong\u003e is designed for \u003cstrong data-start=\"2049\" data-end=\"2077\"\u003eefficient CO₂ dispersion\u003c\/strong\u003e in aquariums over \u003cstrong data-start=\"2096\" data-end=\"2110\"\u003e200 liters\u003c\/strong\u003e. Its \u003cstrong data-start=\"2116\" data-end=\"2142\"\u003elarge ceramic membrane\u003c\/strong\u003e produces \u003cstrong data-start=\"2152\" data-end=\"2178\"\u003eultra-fine CO₂ bubbles\u003c\/strong\u003e, maximizing \u003cstrong data-start=\"2191\" data-end=\"2209\"\u003egas absorption\u003c\/strong\u003e and promoting \u003cstrong data-start=\"2224\" data-end=\"2255\"\u003econsistent CO₂ distribution\u003c\/strong\u003e for thriving aquatic plants\u003c\/p\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":50336211206474,"sku":null,"price":13.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/Frame_2_6_1.jpg?v=1768480045"},{"product_id":"chihiros-co2-silicone-tubing-2m-high-quality-flexible-co2-hose","title":"Chihiros CO2 Silicone Tubing (2m) | High-Quality Flexible CO2 Hose","description":"\u003cp\u003eThe \u003cstrong data-start=\"121\" data-end=\"158\"\u003eChihiros CO2 Silicone Tubing (2m)\u003c\/strong\u003e is a \u003cstrong data-start=\"164\" data-end=\"199\"\u003ehigh-quality, flexible CO2 hose\u003c\/strong\u003e designed for precise and \u003cstrong data-start=\"225\" data-end=\"251\"\u003eleak-free CO2 delivery\u003c\/strong\u003e in planted aquariums. Made from \u003cstrong data-start=\"284\" data-end=\"304\"\u003edurable silicone\u003c\/strong\u003e, it resists kinking and ensures a \u003cstrong data-start=\"339\" data-end=\"360\"\u003estable CO2 supply\u003c\/strong\u003e for optimal plant growth.\u003c\/p\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":50339971694922,"sku":null,"price":6.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/Frame2_7_1.jpg?v=1768480042"},{"product_id":"chihiros-u-clip-secure-hose-management-for-co2-oxygen-lines","title":"Chihiros U-Clip | Secure Hose Management for CO2 \u0026 Oxygen Lines","description":"\u003cp\u003eThe \u003cstrong data-start=\"118\" data-end=\"137\"\u003eChihiros U-Clip\u003c\/strong\u003e provides \u003cstrong data-start=\"147\" data-end=\"190\"\u003esecure and scratch-free hose management\u003c\/strong\u003e, ensuring \u003cstrong data-start=\"201\" data-end=\"232\"\u003eoptimal CO2 and oxygen flow\u003c\/strong\u003e in aquariums. Made from \u003cstrong data-start=\"257\" data-end=\"287\"\u003ehighly transparent acrylic\u003c\/strong\u003e, it firmly holds hoses in place while preventing kinking. Available in \u003cstrong data-start=\"359\" data-end=\"381\"\u003e8mm and 12mm sizes\u003c\/strong\u003e for different aquarium wall thicknesses.\u003c\/p\u003e","brand":"Chihiros","offers":[{"title":"Medium (8 mm)","offer_id":50390770188618,"sku":null,"price":6.9,"currency_code":"EUR","in_stock":true},{"title":"Large (12 mm)","offer_id":50390770221386,"sku":null,"price":6.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/ChihirosU-Clip.jpg?v=1768480053"},{"product_id":"oxyturbo-1-3-way-co2-splitter-with-needle-and-check-valve","title":"Oxyturbo 1-3 Way CO2 Splitter with Needle and Check Valve","description":"\u003cp\u003eThe \u003cstrong data-start=\"1953\" data-end=\"1986\"\u003eOxyturbo 1-3 Way CO₂ Splitter\u003c\/strong\u003e is a high-precision CO₂ distributor with up to three outlets, each featuring a fine-tuning needle valve and an integrated check valve for safe and efficient CO₂ distribution in multiple aquariums.\u003c\/p\u003e","brand":"Oxyturbo","offers":[{"title":"Default Title","offer_id":50502983680330,"sku":null,"price":53.73,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/oxyturbo-1-3-way-co2-splitter-with-needle-and-check-valve-aquarium-boutique-90407070188020.jpg?v=1768480041"},{"product_id":"oxyturbo-1-2-way-co2-splitter-with-needle-and-check-valve","title":"Oxyturbo 1-2 Way CO2 Splitter with Needle and Check Valve","description":"\u003cp\u003eThe \u003cstrong data-start=\"1953\" data-end=\"1986\"\u003eOxyturbo 1-2 Way CO₂ Splitter\u003c\/strong\u003e is a compact CO₂ distributor with two outlets, each featuring a precision needle valve and an integrated check valve for stable CO₂ flow to two aquariums.\u003c\/p\u003e","brand":"Oxyturbo","offers":[{"title":"Default Title","offer_id":50503006093642,"sku":null,"price":38.73,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/oxyturbo-1-2-way-co2-splitter-with-needle-and-check-valve-aquarium-boutique-75723043547107.jpg?v=1768480041"},{"product_id":"oxyturbo-major-2-co-pressure-regulator-with-needle-valve","title":"Oxyturbo Major 2 CO₂ Pressure Regulator with Needle Valve","description":"\u003cp\u003eThe \u003cstrong data-start=\"5151\" data-end=\"5194\"\u003eOxyturbo Major 2 CO₂ Pressure Regulator\u003c\/strong\u003e is a high-performance CO₂ regulator featuring dual gauges, a fine needle valve for precise flow control, and a quick-connect outlet for easy installation.\u003c\/p\u003e","brand":"Oxyturbo","offers":[{"title":"Default Title","offer_id":50503037124938,"sku":null,"price":67.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/oxyturbo-major-2-co-pressure-regulator-with-needle-valve-aquarium-boutique-87144151301603.jpg?v=1768480040"},{"product_id":"chihiros-co-indicator","title":"Chihiros CO₂ Indicator – Accurate CO₂ Drop Checker for Planted Aquariums","description":"\u003cp\u003eThe Chihiros CO2 Indicator is a glass drop checker for continuous visual monitoring of dissolved CO2 levels in planted aquariums. The indicator solution changes color based on CO2 concentration: blue indicates insufficient CO2, green indicates optimal levels, and yellow indicates excess CO2. An essential, no-electricity monitoring tool for any CO2-injected planted aquarium.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe glass vessel is filled with a pH-sensitive indicator solution and placed inside the aquarium. CO2 diffuses through the air gap inside the glass, altering the pH and color of the solution — providing a reliable, real-time visual reference without test kits.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-clarity glass construction\u003c\/li\u003e\n  \u003cli\u003eColor guide: blue = low CO2 — green = optimal — yellow = high CO2\u003c\/li\u003e\n  \u003cli\u003eNo electricity or electronic sensors required\u003c\/li\u003e\n  \u003cli\u003eEssential tool for CO2-injected planted aquariums\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":53534902583626,"sku":null,"price":9.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/www.aquarium-boutique.comt_3_6d9d7b65-607e-4bed-aeff-6a6fae3031df.jpg?v=1768480088"},{"product_id":"co2-drop-checker","title":"Chihiros CO₂ Drop Checker Indicator – CO₂ Level Monitor for Aquariums","description":"\u003cp\u003eThe Chihiros CO2 Drop Checker is a glass indicator vessel used to monitor dissolved CO2 levels in planted aquariums. It works by holding a pH-sensitive indicator solution (4 dKH reference water + pH indicator, sold separately or included) that changes color based on CO2 concentration in the water: blue = too little CO2, green = optimal, yellow = too much CO2.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eThe drop checker hangs inside the aquarium. CO2 diffuses through the air pocket inside the glass and changes the pH of the indicator solution. The color provides a continuous, real-time visual reference for CO2 levels without test kits or electronic sensors.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-clarity borosilicate glass construction\u003c\/li\u003e\n  \u003cli\u003eVisual CO2 monitoring: blue (low) — green (optimal) — yellow (high)\u003c\/li\u003e\n  \u003cli\u003eNo electricity or calibration required\u003c\/li\u003e\n  \u003cli\u003eWorks in any planted aquarium with CO2 injection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":53546887184714,"sku":null,"price":9.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/chihiros-co2-drop-checker-green-indicator.jpg?v=1772720542"},{"product_id":"co2-diffuser-m","title":"Chihiros CO2 Diffuser Mate Size M – CO2 Diffuser Holder for Aquariums","description":"\u003cp\u003eThe Chihiros CO2 Diffuser Mate Size M is a mounting holder for Size M glass CO2 diffusers in planted aquariums. It attaches to the aquarium glass via suction cup, keeping the diffuser firmly in position for consistent CO2 delivery. Compatible with most standard Size M glass CO2 diffusers.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSecure suction-cup mounting for Size M glass diffusers\u003c\/li\u003e\n  \u003cli\u003ePrevents diffuser movement during CO2 injection\u003c\/li\u003e\n  \u003cli\u003eCompatible with most standard Size M glass CO2 diffusers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":53546896523594,"sku":null,"price":16.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/co2.jpg?v=1775632959"},{"product_id":"chihiros-co2-diffuser-mate-size-s-co2-diffuser-holder-for-aquariums","title":"Chihiros CO2 Diffuser Mate Size S – CO2 Diffuser Holder for Aquariums","description":"\u003cp\u003eThe Chihiros CO2 Diffuser Mate Size S is a mounting holder designed for Size S glass CO2 diffusers with a 15 mm diameter and approximately 20 cm body length. It holds the diffuser securely in place against the aquarium glass, ensuring consistent positioning and stable CO2 injection without the diffuser shifting during use.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSecure suction-cup mounting for Size S glass diffusers\u003c\/li\u003e\n  \u003cli\u003eFits diffusers with 15 mm diameter\u003c\/li\u003e\n  \u003cli\u003ePrevents diffuser movement during CO2 injection\u003c\/li\u003e\n  \u003cli\u003eCompatible with most standard Size S glass CO2 diffusers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible diffuser size:\u003c\/strong\u003e S (15 mm diameter, ~20 cm length)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Acrylic \/ suction cup\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":53667937550666,"sku":null,"price":14.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/co2.jpg?v=1775632959"},{"product_id":"chihiros-co2-regulator-mate","title":"Chihiros CO2 Regulator Mate","description":"\u003cp\u003eThe Chihiros CO2 Regulator Mate is an all-in-one CO2 pressure regulator for planted aquariums, combining a dual pressure gauge, integrated solenoid valve, needle valve, and bubble counter in a single compact unit. It connects to standard refillable CO2 cylinders with EU W21.8 thread and works with the Chihiros Solenoid Controller (sold separately) for Bluetooth-based timer control via the My Chihiros App.\u003c\/p\u003e\n\n\u003cp\u003eThe bubble counter features an easy-refill design — water can be topped up without disassembly. The solenoid valve allows automatic CO2 shut-off during the night period, either via a timer plug or the Chihiros Bluetooth controller.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDual pressure gauge: cylinder pressure + working pressure\u003c\/li\u003e\n  \u003cli\u003eIntegrated solenoid valve for automatic CO2 shut-off\u003c\/li\u003e\n  \u003cli\u003eFine needle valve for precise bubble rate adjustment\u003c\/li\u003e\n  \u003cli\u003eEasy-refill bubble counter with integrated check valve\u003c\/li\u003e\n  \u003cli\u003eCompatible with EU W21.8 thread CO2 cylinders\u003c\/li\u003e\n  \u003cli\u003eOptional Bluetooth control via Chihiros Solenoid Controller (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e W21.8 (standard EU refillable CO2 cylinders)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking pressure:\u003c\/strong\u003e 0–4 bar, adjustable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSolenoid:\u003c\/strong\u003e Integrated, 12V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth:\u003c\/strong\u003e Via optional Chihiros Solenoid Controller\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant note\u003c\/h3\u003e\n\u003cp\u003eThe needle valve is designed for fine CO2 flow adjustment only — not for full shut-off. Always use the main cylinder valve to fully close the CO2 supply.\u003c\/p\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":61580431982922,"sku":null,"price":79.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/8.jpg?v=1776067991"},{"product_id":"chihiros-co2-pressure-regulator-pro-limited-edition","title":"Chihiros CO2 Pressure Regulator PRO Limited Edition","description":"\u003cp\u003eThe Chihiros CO2 Pressure Regulator PRO Limited Edition is a high-precision CO2 regulator for planted aquariums, featuring dual pressure gauges (cylinder and working pressure), an integrated 12V DC solenoid valve, fine needle valve, and a built-in bubble counter with check valve. A built-in safety valve automatically releases pressure above 100 PSI, providing an additional layer of protection for pressurized CO2 systems.\u003c\/p\u003e\n\n\u003cp\u003eOptional Bluetooth and app control is available via a separately purchased Chihiros controller, enabling timer-based automation and remote regulation through the My Chihiros App.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDual pressure gauges: cylinder pressure + working pressure\u003c\/li\u003e\n  \u003cli\u003eBuilt-in safety valve — auto-releases above 100 PSI\u003c\/li\u003e\n  \u003cli\u003e12V DC solenoid valve with low power consumption\u003c\/li\u003e\n  \u003cli\u003eIntegrated bubble counter with check valve\u003c\/li\u003e\n  \u003cli\u003eFine needle valve for precise CO2 flow adjustment\u003c\/li\u003e\n  \u003cli\u003eOptional Bluetooth\/app control via separate Chihiros controller\u003c\/li\u003e\n  \u003cli\u003eLimited Edition finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSolenoid:\u003c\/strong\u003e 12V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety valve:\u003c\/strong\u003e Auto-release above 100 PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth:\u003c\/strong\u003e Via optional Chihiros controller (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":61580432343370,"sku":null,"price":180.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/5_71bbb70f-1b8e-4f72-8f17-44378b491ede.jpg?v=1776068201"},{"product_id":"chihiros-co2-spiral-bubble-counter","title":"Chihiros CO2 Spiral Bubble Counter","description":"\u003cp\u003eThe Chihiros CO2 Spiral Bubble Counter is a glass bubble counter with a spiral internal channel that slows the CO2 bubbles, making counting easier and more accurate. It connects inline in a standard CO2 system between the regulator and the diffuser, allowing precise visual monitoring of CO2 flow rate without disrupting the system.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSpiral glass channel for easy, accurate bubble counting\u003c\/li\u003e\n  \u003cli\u003eHigh-clarity glass construction\u003c\/li\u003e\n  \u003cli\u003eInline installation — fits between regulator and diffuser\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard CO2 tubing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Chihiros","offers":[{"title":"Default Title","offer_id":61580433621322,"sku":null,"price":19.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/15.jpg?v=1776068856"},{"product_id":"dennerle-co2-quick-test","title":"Dennerle CO2 Quick Test","description":"\u003cdiv class=\"ai-seo-content\"\u003e\n\n\u003ch2\u003eDennerle CO2 Quick Test – Instant CO2 Measurement for Planted Aquariums\u003c\/h2\u003e\n\n\u003cp\u003eThe Dennerle CO2 Quick Test is a compact, easy-to-use colorimetric test kit designed to rapidly determine the dissolved carbon dioxide (CO2) concentration in freshwater aquariums. As one of the most widely trusted CO2 test solutions in the aquascaping hobby, it delivers results in just a few seconds using an intuitive five-color comparison system — no laboratory skills required.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThis test kit comes as a double pack (2 tests), making it ideal for quick spot-checks of your CO2 levels throughout the day. It is designed for use in planted freshwater aquariums only — it does not measure liquid carbon fertilizers (such as liquid CO2 supplements like Carbo Elixir or Easy Carbo), which contain other forms of carbon, not gaseous CO2.\u003c\/p\u003e\n\n\u003ch3\u003eMain Purpose\u003c\/h3\u003e\n\u003cp\u003eThe CO2 Quick Test allows aquarists to instantly verify whether their aquarium has adequate CO2 levels for healthy aquatic plant growth. Carbon dioxide is the single most important macro-nutrient for photosynthesis in submerged plants, yet it is often the limiting factor in many tanks. Too little CO2 stunts plant growth and encourages algae blooms. Too much CO2 can be harmful to fish. This test lets you find and maintain the ideal balance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eResults in seconds — fastest CO2 test available for home aquariums\u003c\/li\u003e\n  \u003cli\u003eIntuitive 5-color scale — immediately shows whether CO2 is too low, ideal, or too high\u003c\/li\u003e\n  \u003cli\u003eNo carbonate hardness (KH) measurement required\u003c\/li\u003e\n  \u003cli\u003eNo mixing of aquarium water with indicator chemicals\u003c\/li\u003e\n  \u003cli\u003eSimple shake-and-read procedure — fill, shake, read result\u003c\/li\u003e\n  \u003cli\u003ePack of 2 — conduct multiple tests at different times of day\u003c\/li\u003e\n  \u003cli\u003eMade by Dennerle — a trusted German aquarium technology brand since 1966\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTest method: colorimetric, 5-color scale\u003c\/li\u003e\n  \u003cli\u003eResult time: a few seconds\u003c\/li\u003e\n  \u003cli\u003eContents: 2 quick CO2 tests\u003c\/li\u003e\n  \u003cli\u003eWater type: freshwater only\u003c\/li\u003e\n  \u003cli\u003eDoes NOT measure liquid carbon fertilizers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eColor Scale Interpretation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBlue = too little CO2 (increase CO2 injection)\u003c\/li\u003e\n  \u003cli\u003eBlue-green = slightly low CO2\u003c\/li\u003e\n  \u003cli\u003eGreen = ideal CO2 level (optimal for plant growth)\u003c\/li\u003e\n  \u003cli\u003eYellow-green = slightly high CO2\u003c\/li\u003e\n  \u003cli\u003eYellow = too much CO2 (reduce injection; may harm fish)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAquarium Applications\u003c\/h3\u003e\n\u003cp\u003ePerfect for verifying CO2 levels during setup of a new CO2 system, after adjusting bubble rates, or as a quick daily check. Best used mid-day (after half the lighting period) since CO2 levels fluctuate — they are typically highest in the morning (before plants consume it) and lowest in the afternoon (peak consumption).\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAll freshwater planted aquariums\u003c\/li\u003e\n  \u003cli\u003eUsed alongside pressurized CO2 systems, CO2 tablets, or CO2 bio-reactors\u003c\/li\u003e\n  \u003cli\u003ePairs perfectly with the Dennerle CO2 Langzeittest Correct for comprehensive CO2 monitoring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBeginners checking their CO2 system for the first time\u003c\/li\u003e\n  \u003cli\u003eExperienced aquascapers doing spot-checks\u003c\/li\u003e\n  \u003cli\u003eAnyone troubleshooting algae problems linked to CO2 imbalance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is the best time to test?\u003c\/strong\u003e Test mid-day, after half your lighting period has passed. CO2 is highest in the morning (plants haven't consumed it yet) and lowest in late afternoon (peak consumption).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this test be used in saltwater?\u003c\/strong\u003e No. This test is designed for freshwater aquariums only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this measure liquid CO2 fertilizers?\u003c\/strong\u003e No. Products like liquid carbon (Carbo Elixier, Easy Carbo) don't contain actual CO2 gas and will not be detected by this test.\u003c\/p\u003e\n\n\u003ch3\u003eExpert Recommendations\u003c\/h3\u003e\n\u003cp\u003eUse the CO2 Quick Test as a rapid diagnostic tool when troubleshooting plant health or algae issues. For continuous, long-term CO2 monitoring, combine it with a permanent drop checker like the Dennerle CO2 Langzeittest Correct, which stays in the aquarium at all times.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Dennerle","offers":[{"title":"Default Title","offer_id":61633298497866,"sku":"23d3490","price":3.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/www.aquarium-boutique.comt_19.jpg?v=1780171912"},{"product_id":"co2-schlauch-pro-4-6mm-2m","title":"CO2 Schlauch PRO 4\/6 mm (2 m)","description":"\u003cdiv class=\"ai-seo-content\"\u003e\n\n\u003ch2\u003eCO2 Schlauch PRO 4\/6 mm – Premium CO2-Resistant Tubing for Planted Aquariums\u003c\/h2\u003e\n\n\u003cp\u003eThe CO2 Schlauch PRO 4\/6 mm is a professional-grade carbon dioxide tubing designed specifically for planted aquariums and aquascaping setups. With an inner diameter of 4 mm and an outer diameter of 6 mm, this 2-meter hose matches the standard connection size used by virtually all CO2 regulators, diffusers, bubble counters, and solenoid valves available on the market today.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eUnlike standard silicone airline tubing, this PRO tubing is manufactured from CO2-resistant materials — either high-grade polyurethane (PU) or food-safe silicone — that prevent gas permeation and diffusion through the hose walls. This ensures that every bubble of CO2 injected into your system reaches the diffuser efficiently, without losses that would otherwise waste your CO2 supply and destabilize plant growth.\u003c\/p\u003e\n\n\u003ch3\u003eMain Purpose\u003c\/h3\u003e\n\u003cp\u003eThe primary function of this tubing is to create a reliable, gas-tight connection between your CO2 cylinder or bottle and the downstream components of your CO2 system: pressure regulator, solenoid valve, needle valve, bubble counter, check valve, and ultimately your CO2 diffuser or reactor. It is the critical \"last mile\" component in any pressurized CO2 fertilization system.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCO2-impermeable material prevents gas loss through the walls — unlike silicone or standard airline tubing\u003c\/li\u003e\n  \u003cli\u003e2-meter length provides ample reach for most aquarium cabinet setups\u003c\/li\u003e\n  \u003cli\u003e4\/6 mm size is the universal standard for CO2 equipment — fits all major brands\u003c\/li\u003e\n  \u003cli\u003eTransparent or lightly tinted design blends discreetly with aquarium equipment\u003c\/li\u003e\n  \u003cli\u003eFlexible yet kink-resistant — maintains consistent CO2 flow even around tight corners\u003c\/li\u003e\n  \u003cli\u003ePressure-rated for safe use with compressed CO2 systems\u003c\/li\u003e\n  \u003cli\u003eCompatible with glass CO2 equipment (tip: briefly dip end in hot water to soften before pushing onto glass fittings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInner diameter (ID): 4 mm\u003c\/li\u003e\n  \u003cli\u003eOuter diameter (OD): 6 mm\u003c\/li\u003e\n  \u003cli\u003eLength: 2 meters\u003c\/li\u003e\n  \u003cli\u003eMaterial: CO2-resistant (polyurethane or food-safe silicone)\u003c\/li\u003e\n  \u003cli\u003ePressure rating: suitable for pressurized CO2 systems (manufacturer has not officially published exact bar rating for this specific item)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAquarium Applications\u003c\/h3\u003e\n\u003cp\u003eThis tubing is suitable for all planted freshwater aquariums using pressurized CO2 injection systems. It connects seamlessly with external diffusers, internal diffusers, CO2 reactors, inline diffusers, and bubble counters. Ideal for Nature Aquarium style tanks, Dutch aquascapes, and any aquarium focused on high-light, high-CO2 plant cultivation.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAll CO2 regulators with 4\/6 mm output connections\u003c\/li\u003e\n  \u003cli\u003eAll inline and external CO2 diffusers in 4\/6 mm size\u003c\/li\u003e\n  \u003cli\u003eBubble counters and check valves with 4\/6 mm connections\u003c\/li\u003e\n  \u003cli\u003eCompatible with major brands: Dennerle, JBL, Aquili, CO2Art, Chihiros, ADA, and others\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBeginner and advanced aquascapers\u003c\/li\u003e\n  \u003cli\u003ePlanted aquarium enthusiasts\u003c\/li\u003e\n  \u003cli\u003eHigh-tech CO2 injection setups\u003c\/li\u003e\n  \u003cli\u003eAquarium hobbyists replacing degraded silicone tubing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use regular airline tubing instead?\u003c\/strong\u003e No. Standard silicone or vinyl airline tubing is CO2-permeable and will allow significant gas loss over time. CO2-specific tubing is essential for efficiency and long-term performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing safe for fish and shrimp?\u003c\/strong\u003e Yes. The materials used are food-safe and aquarium-safe, with no leaching of harmful substances into the water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I connect it to glass fittings?\u003c\/strong\u003e Briefly dip the end of the tubing into very hot (not boiling) water for a few seconds to soften it, then push firmly onto the glass connection. It will seal tightly as it cools.\u003c\/p\u003e\n\n\u003ch3\u003eExpert Recommendations\u003c\/h3\u003e\n\u003cp\u003eAlways use CO2-resistant tubing in pressurized systems. Silicone tubing causes invisible CO2 losses that are difficult to diagnose and waste expensive CO2. Replace tubing every 2–3 years or when it shows signs of yellowing, stiffness, or cracking to maintain a fully sealed system.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"AS Aquaristik","offers":[{"title":"Default Title","offer_id":61633298530634,"sku":"11c50051","price":6.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/3685\/5370\/files\/www.aquarium-boutique.comt_18.jpg?v=1780171421"}],"url":"https:\/\/aquarium-boutique.com\/collections\/co2-equipment.oembed","provider":"Aquarium Boutique","version":"1.0","type":"link"}