Danner Supreme 06018 Model 18 Aqua-Mag Air Fractionating Water Pump 1800 GPH CONTINUOUS DUTY PUMP: The Danner Supreme 06018 Model 18 Aqua-Mag Air Fractionating Water Pump 1800 GPH is built to run 24/7. It features an adjustable venturi, fractionating impeller and reusable debris filter. Its maximum flow rate is 1800 gph, and it operates submerged or inline. IDEAL FOR AQUARIUMS: This pump is designed for use with filtration systems and other applications that require dissolved oxygen mixed into the water column. It works in saltwater and freshwater. This pump's maximum height is 16 feet, 5 inches. LOW NOISE & AERATING IMPELLER: The adjustable venturi inlet is on the pump's front and includes a muffler to reduce noise. The pump has a ceramic magnet with an air fractionating impeller that provides aeration. An 18 inch vinyl aerating tube is included. ENERGY EFFICIENT: This pump uses only 150 watts of electricity. Its grounded power cord is 10 feet long. 5 YEAR WARRANTY, CONNECTION SIZES: The pump has a 3/4 inch FPT inlet and MPT outlet. The barbed venturi accepts 1 inch flexible tubing. This pump has a 5 year limited warranty from its manufacturer.