The PS10 Airmax Aerator is a 1/4 hp single diffuser aerator. Included is the ProAir4 Weighted Diffuser, Silent Air Cabinet with cooling fan, pressure gauge, pressure relief valve and 100' of EasySet Self-Weighted 3/8" Airline. Aerates ponds from 1/4 acre (6' - 9' deep) to 1 acre (12'+ deep).