A LONG time ago, I read a book called "How To Get Out Of The Rat Race And live On $10 A Month." In it, it described dumping 'tennis-court lime' in a stream to kill trout and pick them up down stream. If I remember right, the tennis court lime was suppose to eliminate the oxygen out of the water, stunning the fish. Any thoughts from the Scientists here? As I have posted in the past, I too have a yellow-bullhead 'issue' and even observed several hundred or more fry in a black cloud cruizing the edge of my pond this year...