Bruce :

Great idea !! It seems that with a little endg. you could make the system also be lowered in the pond with the sweeper nozzle pointing up to use it to turn over the water and add o2 at depth and to cool the pond in summer. You need to think about current flow to see what water is moving where to get an idea of mixing effect. If you ran the sweeper until the top water was well oxygenated and then lowered the nozzle (pointed up) the currents should bring cool water up and pull the oxygen rich water from the pond sides down toward the deep nozzle based on currents. This does not however take into accout water temps. and density and pressure . A very neat idea and concepts. Bill Cody posted on a DO crash event that described the shallow mixing effect. ewest