Augie,
I will never have a complete mixing using two or three diffusers in the deep end of a multi acre pond, so the stale water at the dam will be sucked out first. After that water is gone, I want to try to remove excess nutrients. The mixing that happens will allow the partially mixed water with a higher nutrient load to be next.
Hope this helped. Sorry for the confusion.
Ah... I think I get it now... aerate the shallow upper end, draw from the deeper lower end...
This stuff is all still pretty new to me. I scratch my head a lot trying to follow some of the concepts that are described.
