I don't do any feeding or fertilizing in my big pond (to costly). I also don't have many of any BG but do have tilapia, redears, golden shiners. Do these fish cause the same problem with LMB? Wouldn't more forage of a smaller size also be a benefit?

"That situationis not common though." Then even if trying in my case with over 20acres it would be harder to reach that point, correct! So wouldn't the payoff even be greater?

Fish may swim in their own toilets but sometimes I swim in their toilets too!