Complete Aquatics AE40080 EnhanceAir Junior 1 Aeration System with 1 Diffuser and for Ponds upto 1,000 g Aerates ponds up to 1,000 gallons Increase dissolved oxygen levels for happier and healthier fish Improve water clarity, reduce sludge and eliminate bad odors In winter, keeps a hole open in ice with less power than a floating heater uses only 5 watts