XtremepowerUS Aquarium Combo Koi Pond Bio Aquarium 13W UV-C Lamp Filter & 110V 3200GPH Pump Combination This listing is selling a Combo (Filter & Pump) 4000 Gal Koi Pond Filter: Integrated 13W UV Clarifier (included), Inlet/Outlet Hose Adapters 3/4" - 1-1/2" Pump: 120V/60Hz, 3200GPH (1/3HP) 1 1/8" Diameter Max Temperature: 104F Height Max: 18'