Aquascape AquaSurge PRO 2000-4000 GPH Adjustable Flow Pump for Ponds, Pondless Waterfalls, and Skimmer Filters, Wireless Remote Control, Asynchronous | 45009 Ideal for ponds, pondless waterfalls, and other water feature applications; pumps up to 3,947 gallons per hour (GPH) Designed for use in skimmer and waterfall-filter systems; made for continuous use in either vertical or horizontal orientation Energy-efficient asynchronous pump design more powerful than traditional magnetically driven pond pumps Included wireless remote and receiver enable you to adjust or turn on/off pondless waterfall applications Measures 12 x 5.5 x 7 inches (LxWxH); 20-foot power cord; 3-year limited warranty