Danner Manufacturing, Inc. Supreme Hydro-Mag, Recirculating Water and Air Pump with Venturi, 500GPH, #40125 Pondmaster Supreme Hydroponic Model 5 Pump 500 GPH 10' Power Cord on All Models Time Proven Magnetic Drive Technology, Energy Efficient and Oil-Free In-line or Submersible Operation With an adjustable venturi, the supreme hydroponic utility pump adds aeration into the nutrient rich water flow, stimulating root growth This pump uses time proven magnetic drive technology and is energy efficient It is capable of in-line or submersible operation Features an 1/2-inch FPT inlet and MPT outlet; 10-feet power cord Comes with 500-GPH capacity