Max Pond Vol (Light Stock): 12000gls/55000 lts - Max Pond Vol (Med Stock): 8000 gls/36000 lts - Max Koi Load 1% Feed Rate: 250lb/110 kg -Max Feed Rate Per Day: 1.50 lb/1.1kg - Max Rec Flow Rate: 4000 gph - Size: 1.95cm High x 0.79cm Dia - Max Head of pump at least 2.5m more than working head or exceed 4.5m