These PondAir™ aeration kits are compact and perfect for ponds under 1,000 gallons. They can be used outdoors during the hot summer months as well as during the cold harsh winter months. With the adjustable air flow regulator you can adjust the air flow to your pond's needs. Please keep the aerator unit off of the ground and covered. Consider one of our artifical rock covers. PondAir™ 2 - Two Air Stone Aeration System aerates up to 1,000 gallons and includes: