CrystalClear PondAir 4 Aeration Kit — Quiet 4W Pond Aerator for Ponds up to 2,000 Gallons (Water Gardens & Koi Ponds)

Designed for small backyard ponds, water gardens and koi ponds up to 2,000 gallons, the CrystalClear PondAir 4 boosts water circulation and increases dissolved oxygen to support a healthier pond ecosystem. This bottom-diffused aeration system delivers oxygenated air to targeted areas on the pond floor to encourage beneficial bacteria that break down muck and help clear cloudy water. The electric compressor runs quietly around the clock (24/7) while consuming just 4 watts of power — enough to aerate your koi pond for only pennies a month. PondAir 4 is suitable for year-round use; running it during winter helps maintain an opening in ice and allows harmful gases to vent. Beyond backyard ponds, PondAir aerator kits also work well in large aquariums, stock tanks and hydroponic setups. For protection and discreet placement outdoors, an optional TrueRock Mini fiberglass fake rock cover with built-in ventilation can be used to shield the unit from the elements while allowing airflow.