Simple Deluxe 400 GPH UL Listed Submersible Pump with 15' Cord, Water Pump for Fish Tank, Hydroponics, Aquaponics, Fountains, Ponds, Statuary, Aquariums & Inline#1 HAS PRE FILTER INCLUDED Pre filter on the intake prevents debris from entering your pump and extend the life of your pump Max flow rate: 400GPH, Max Lift Height 8. 2ft DURABLE QUALITY Our Polished Aluminum Oxide Ceramic Impeller Shaft insures long pump life because it is non corrodible and more than 3 times as hard as stainless steel. Epoxy Resin Encasement of key internal motor components prevents unwanted conductivity and corrosion of metal parts