Fluval Bio-CO2 Pro Low-Pressure System, up to 33 US Gal / 125 L

Easy-to-use CO2 delivery system allows both new and experienced hobbyists to effortlessly grow and maintain vibrant live aquatic plants in your tank Safe low-pressure operation - 1.3 bar / 19 psi max. vs. traditional high-pressurized systems (55-80 bar / 800-1100 psi) Provides up to 30 days of reliable CO2 production through a naturally occurring fermentation process involving sustainable raw materials (sugar and yeast) Recharging convenience - no refilling high-pressure cylinders Quick 4-step process requires less than 10 minutes per month to maintain a beautiful planted aquarium High-quality stainless steel reaction chamber with 100% silicone gasket prevents CO2 escape Adjustable bubble counter with precision regulator and nano bubble diffuser for accurate CO2 delivery your plants need Pressure release valve for additional security and peace of mind Starter Bio- CO2 Activator yeast and Booster tablets included - Refill Packs sold separately (#A8457) System is compatible with CO2 level tests (sold separately)