I have been meaning to ask this question for sometime but just now round to it.....20 acre pond in Ellis Cty. At times during the day and evening our pond almost looks like rain is falling on it. At first I thought it was shad but the closer I looked it is air bubbles that have released and come to the top and "pop" leaving what almost looks like a light rain shower. Do others have the same situation? I have got to believe it is good almost like it is self-aerating. Oh yeah, it is mostly in the deeper parts that we see this. Not so much in the shallows.......any thoughts?