DLJ - Others should weigh in on this topic. Your situation is more involved and I don't think it is aerator related because your bass are not dying. If the problem is a lack oxygen & too much hydrogen sulfide problems from incorrerctly starting the aeration, why are bass and goldfish not dying unless the others are dead and lying on the bottom and you are not seeing them? IMO, but I have no proof, I think LMB would require slightly more DO before they are stressed compared to catfish.
I don't think your pond would not have a large enough or voluminous anoxic zone to cause the problem you are describing. Sinced you apparently ran the new aerator gradually over the period of a few hours per day before the 8 hr/day compressor run, water quality should have remained low stress. From your description can I assume that your catfish were dying before you started aeration????
Last edited by Bill Cody; 06/24/12 02:13 PM.
