If it was a low D.O. situation (which it sounds like), I would be interested in knowing how large your pond is, avg. depth, and what size aerator you have. IF your aeration system is undersized, perhaps others can learn from it. Another member indicated that he had a partial kill even with an aerator. I'm really curious to know what your turn-over rate is with respect to your aeration system. Assuming you did indeed have an oxygen crash, you would hate to think that the expense of an aeration system didn't prevent the problem. I hate to hear that you lost your fish, but I hope we might be able to learn from your situation. Thanks for your post. Shawn
