The PondMaster Mag-Drive Pumps are ideal for all water gardens, ponds, and statuary. PondMaster Mag-Drive pumps consist of a power unit encased in waterproof epoxy which creates a magnetic field. This drives a powerful magnetic impeller, the only moving part, which makes it extremely energy efficient (over 50% savings compared to equivalent conventional pumps). These pumps are made of environmentally friendly plastic, are virtually maintenance free and fish safe! They operate submerged or in-line. The PondMaster Mag-Drive Pumps are specifically designed for the demands of a pond and designed to run continuously, without seals wearing out. These pumps are oil-free and highly energy efficient. All pumps have prefilters except the 5000 gph which has a clog-free filter screen. The PondMaster Waterfall Pumps are ideal for waterfalls in medium to large ponds. They are designed for high flow and maximum pumping height. The PondMaster Waterfall Pumps are built with ceramic bearing surfaces for continuous duty and are oil-free. They feature all black polypropylene housing.The PondMaster Waterfall pumps have a 3/8" solid handling capability.