cb, I think you would have to leave the pump/s on fairly continuously to see any real effects and, at that point, wouldn't the common aeration system do the same thing, maybe better?

A pump system, like you describe, would certainly stir the muck up and redistribute it throughout the pond leaving rich nutrients in oxygenated waters. The algae would take advantage of this newly available fertilizer.

Not that I have any real experience in the matter...just my thoughts.


Fish on!,
Noel