160195 Features: -Good for ponds up to 16,000 gallons.-Increases oxygen levels to ensure healthy pond life.-Ensures pond balance by promoting beneficial bacteria growth for biological filters.-Lowers toxic gases and ammonia by promoting gas exchange.-Reduces chance of fish kill during the winter by keeping a hole open on the water"s surface.-(2) Two-membrane stick diffuser plate and fittings. Specifications: -KA-40 High-efficiency compressor -- dual-air control valves and uses only 35 watts with a max air flow of 1.7 CFM. Dimensions: -(2) 25" of 3/8" weighted airline.