Small Aerator for Ponds up to 4,000 Gallons and 4 Feet Deep -- Increases water circulation and oxygen saturation, improving the natural ecosystem. Ideal for a backyard pond or small outdoor fishpond.

Maintains Hole in Winter Ice - Aeration kits release small bubbles from diffuser sticks, creating water circulation and maintaining an opening in ice. Allows toxic gases to escape, benefiting fish.

Quiet Operation & Energy Efficient -- Powered by an energy-efficient electric compressor, with near-silent 24/7 operation. Aerate your koi pond, water feature, or water garden for just pennies a day.