Max Pond Vol (Light Stock): 3750 gls/17000 lts - Max Pond Vol (Standard Stock): 2500 gls/11000 lts - Max Koi Load 1% Feed Rate: 34 kg -Max Feed Rate Per Day: 0.75 lb/340 gm - Max Rec Flow Rate: 1250 gph/5670 lph - Size: 1.50cm High x 0.59cm Dia - The max Head of pump at least 2.0m more than working head or exceed 4.0