Electric Floating Aerator The offered aerators are used to recycle large volume of still water. These products infuse fresh air into the ponds and lakes water to improve quality. Our range comes with the high capacity rotary system to move the water into the atmosphere. Surface aerators push water from under the water's surface up into the air, then the droplets fall back into the water, mixing in oxygen. The jets of water break the surface with varying degrees of force. There are many types of surface aeration devices, including floating aerators