Product Detail HY-Drive design combines the benefits of magnetic and direct drive technologies to deliver an extremely quiet, energy efficient, low maintenance pumping source Specifically for use in larger pond installations Easy on the wattage, powerful enough to create a dynamic, attractive waterfall or drive a medium skimmer Cycles 1,600 gallons per hour, can be positioned vertically or horizontally, is equally at home underwater as a submersible pump or as an inline, external pumping source Whisper quiet operation, oil free and fish safe, operates continuously, clog resistant filter screen, adapts to 1.5 inch threaded fittings, includes 20 foot power cord . The "Danner 02663 Proline HY Drive 1600GPH Waterfall Pump" is best product for you. We recommended Danner 02663 Proline HY Drive 1600GPH Waterfall Pump