Oxymax® Aeration Systems work from the bottom of the pond, completely submerged, out of sight and silent. It couples an electric motor to a propeller water transport system. The oxygen-depleted water is moved rapidly from the bottom of the pond directly and effciently to the surface. The cooler, denser water absorbs oxygen as it quickly spreads across the pond. It returns down through the de-stratifed layers, providing equal distribution of oxygenated water.