Airmax PondAir 2 Aeration Kit Aerates ponds up to 1000 gallons, 2 ft deep Adds valuable oxygen and circulation, Single Diaphragm Compressor Extremely quiet operation, producing 0.15 CFM of airflow 2 round blue air stones, 2 check valves, 6 ft power cord Includes 2 rolls of 30 ft black vinyl tubing, air flow regulator