My 1/3 acre pond was constructed in 2017. It had aeration from day 1. I let it run 24/7 from about March to November. I shut it off during the cold months. I did this in the winter of 17/18 with no issues and did so this winter as well.
My pond is stocked with CC, BG,HBG, & HSB.
I turned the aerators back on Sunday and noticed nothing different Monday or Tuesday but yesterday I found 14 dead catfish and today I found 5 dead catfish and two dead bluegill.
I am guessing the aerators Brough up some nasty stuff that is hurting the fish? It seems to be affecting the catfish the most. No HSB have been harmed and while I have a lot of BG/HBG in there I have only seen two dead.
What should I do at this point? The aeration has been on nonstop for 4 days now. Just leave it going?
