With excellent performance especially in hydroponic systems and fountains, EcoPlus Adjustable Water Pumps feature an adjustable flow rate to achieve the aquatic environment you desire with the option of in-line or submersible, fresh or sea water dual use. They are powerful and reliable featuring a high-powered magnetic drive with a ferrite rotor, constructed with a precise high aluminum ceramic shaft. This greatly improves GPH and head pressure! The double water-cooled structure promotes rapid heat dissipation while coated in a high quality resin that prevents electricity leakage by sealing the winding for optimal safety. Each Pump includes three different sized fittings which attach on the outside threaded distribution outlet. Easily secure your pump with the included suction cup mounts located on the base of the unit.