Oxymax® Aeration System works 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 efficiently to
  the surface.
  The cooler, denser water absorbs oxygen as it quickly spreads across the pond. It returns down
through the de-stratified layers, providing equal distribution of oxygenated water.
Give the aquatic manager a solution
  to water quality problems when
  no fountain spray pattern is desired. These units are environmentally
friendly and will not disturb your
aquatic landscape.
Leo  Baekelandlaan 5209,3900 Overpelt(BE),T 003211649194,F 003211663923