Ok this what happened at my place this weekend, I had some adult CNBGs die. Around 10 that I saw. When I was getting them out of the pond I noticed bubbles coming from the bottom. No aeration here. This corner of the pond had a bunch of FA in it and muck from leaves falling in pond. In a panick I grab a hose and hooked it to my well to run water in that corner, 50 gallons a minute. Had to leave and drive back to Dallas to work, neighbor check the pond on Monday and saw no more dead fish and no bubbles. Walt Overton is bringing me 100 pounds of Tilapia next week, think they will sovke this muck issue I have?