Supreme Hydro-Mag Utility PumpWith 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. Models 2 through 18 incorporate an adjustable Venturi which adds Aeration into the nutrient rich water flow, stimulating root growth. 10 Power Cord on all models. Energy efficient and Oil