Supreme® Aqua-Mag® Pumps are designed for use as fountain pumps, pond pumps, and waterfall pumps. They have been fulfilling the needs of professionals and hobbyists for over 20 years with efficient, quiet and reliable 24/7 performance. Aqua-Mag® Pumps are ideal in either saltwater or freshwater environments and operate equally well when used as in-line pumps or submersible pumps. With only one moving part (the magnetically-driven impeller) and an epoxy-encased power unit, you don't have to worry about contaminating the water with harmful oils or chemicals! Includes foam pre-filter.