MAKES POND WATER BETTERThe Blue Diamond Enviro ET40 Koi Pond Summer Aeration and Winter Deicer Linear Air Pump adds oxygen to a pond, water garden or other water feature throughout the year in all weather conditions. The increase in oxygen clarifies the water and raises its quality, which helps fish, plants and other pond life. The air that the pump adds is clean and free of oil. When temperatures are freezing, the pump helps to keep ice from forming on the pond.Making little noise as it operates, the pump has a maximum air output of 1.41 cubic feet of air per minute. Its maximum pressure is 0.15 bar. It uses 30 watts of electricity. The size of its connector is 0.55 inch OD.WEATHERPROOF AND ROBUSTBacked by a 2-year manufacturer's warranty, this air pump is designed to be durable. It is weatherproof, and its sturdy construction includes material specially formulated for its linear diaphragm.SIMPLE TO USE AND MAINTAINThis pump comes complete with a bronze 3/8" ID bronze fitting and is easy to set up. It is easily serviceable with replaceable diaphragm kits (sold separately) to give the pump a long life.Put the Blue Diamond Enviro ET40 Koi Pond Summer Aeration and Winter Deicer Linear Air Pump to work in your pond or septic system. Please Note: For applications requiring more than 33 ft. of tubing please contact us! Click "Add to Cart" now!