120915 Features: -Aeration kits are compact and perfect for ponds under 2,000 gallons.-Used outdoors during the hot summer months as well as during the cold harsh winter months.-Check valves.-Adjust the air flow to your pond"s needs.-Vented rock cover is recommended when used outdoors for protection.-Diffuser air balls.-Good for ponds up to 1,000 gallons.-Airline: (2) 0.25" W x 300" D.-Made in USA. Specifications: -High efficiency dual output compressor that uses only 4 watts with a max air flow of 0.15 CFM.