Outdoor Aquarium CO2 Regulator, Pressure Reducer for Planted

Using the CO2 regulator, you can initially adjust the amount of CO2 accurately and safely. The two pressure gauges allow a more accurate reading of the indoor aquarium pressure and working outlet pressure. The fine adjustment valve can accurately control the output of CO2. Made of hard aluminum alloy allows for use without worrying about rust. The aquarium CO2 solenoid valve can be used with our wall timer to perform an automatic timer switch. Package contains bubble counter, wrench and allen key, O sealing rings, instruction manual.