I don't even know the actual pump I'm using they are small and it doesn't take much to make them work. I'll try to take a look at them to see what the output is tomorrow.what kind of air pump do they need? I’d be using two of the ZB-300’s for a 120gallon and one ZB-200 for a 32gallon. I’d like to use one pump for the 32 and a different one for the 120
Tank is gonna be 120gallons