5-pound brushed aluminum cylinder. Made in the US. Brand new and empty. Equipped with Sherwood Cylinder Valve w/ black hand wheel. CO2 regulators and CO2 cylinders have CGA 320 fittings for USA & Canada. A CGA-320 fitting...
Solenoid for automating dosing of CO2 Too much CO2 can reduce the pH in an aquarium to levels that are stressful for fish. For the safe use of CO2 it is highly recommended to automate the CO2 system with either a simple time swit...