2L Aquarium CO2 Generator System, CO2 System Kit with Regulator and Needle Valve for Aquarium Plants Tanks

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Professional Factory -- Our 2L CO2 bottles are constructed from premium 1.2mm SUS304 stainless steel - 20% thicker than standard tanks. Far superior to plastic bottle generators, they're more durable, stable, safe, and high-pressure resistant. Premium Safety Protection -- Automatic pressure relief valve activates when CO2 pressure exceeds 30-35KG. 12V waterproof solenoid valve prevents leakage risks for complete safety. Tips for All Users -- The required powders to generate CO2 gas are not included; you will need purchase the citric acid and sodium bicarbonate powders separately. NOTES: (1) The motorized valve may make a soft sound when turning on/off — this is normal and not a fault. It runs quietly during normal operation;(2) Soak the diffuser in your aquarium for 24 hours before use. If bubbles aren't released right away, wait briefly due to low initial air pressure. If problems continue, check tube connections for leaks;(3) The motorized valve is not waterproof. Avoid contact with water to prevent damage. Professional DIY kit -- A complete system in 2L size bottle, that includes SUS304 stainless bottle, regulator, Solenoid valve， Filter, precision needle valve, and easily adjustable bubble counter, ect High Precision -- having the 12V solenoid on a timer, you can specify when you want CO2 injection on and for how long. Bubble counter with check valve built-in. It stops water from back flowing into your CO2 tank.