I dont know prob. like 100 gph for each cup. Get a adjustable one. Set up a tall res with a float swich I would guess and an airstone or another pump that stirs it with a air stone. Hit up GWDivaDC on gaim its a free download
karmaxul Reviewed by karmaxul on . Hydro Pump Question I am building my first hydro system, small 5 grow bulbs. My question is how big of a pump do I need in order to fill 5 1/2 sized 2liter bottles from my res? On this type of design does the pump need to stay on or have watering times? My medium will be shag moss or clay. Below is a pic of the design but I downgraded to a 5 slotter. DFG Rating: 5