These super quiet, energy efficient aerators operates for only pennies a day, can run for 5-8 years with minimal maintenance and can be used outdoors. Kit includes: compressor, 15 of weighted tubing and air diffuser. 3 year manufacturers warranty on compressor, 5 years on tubing and diffuser. For ponds from 1500 3000 gallons. 115 volt compressor draws 25 watts. Maximum .8CFM at maximum 6 depth.