Introduce more oxygen faster with Kasco's 3.3AF Surface Aerators. The high-performance design of these aerators uses a single open propeller to create and push water droplets into the air allowing efficient transfer of oxygen to the water. Agitation and movement created by the process spreads the oxygenated water throughout the body of water. These units can operate in as little as 24 in. (.7M) of water. Kasco’s 3 HP AF Series surface aerators now come with a lightweight, 2-blade weedless prop, designed to maximize the unit’s water moving performance and cut through even the toughest aquatic vegetation, all without increasing amp draw. Ideal for ponds/tanks with surface areas of about 3 acres.