With the ability to aerate up to 16,000-gallon pond, KoiAir Aeration Kits are flexible and ideal for medium to large sized water gardens and koi ponds. Aeration kits can reduce pond maintenance and improve the health of your fish. Built with an energy efficient dual diaphragm 35-watt compressor, KoiAir 2 Aeration Kit provides maximum circulation and oxygen with 1.70CFM airflow. Kit includes a single diffuser plate with two Teflon maintenance free diffuser sticks, 50 feet of 3/8" weighted airline and a 6' power cord. Maximum airline and diffuser plate depth is 4 feet.