Thanks for all of that great info.
I didn't think the fish could sense higher DO water. I also didn't think they randomly circled over a lot of territory once they started piping such that they might luck into oxygenated waters that would save their life.
My interpretation of Bill Cody: If you are going to aerate a small pond to avoid fish kills, then you need to aerate the WHOLE pond.
Of course, the original post was contemplating aeration for 15 acres, which to me qualifies as a large pond. The wind-driven surface wave aeration on a 15-acre pond might be a whole order of magnitude greater than the mixing on a 3/4 acre pond. When the wind is blowing!
WiPondGuy, do you ever have a pond management person visit your pond or have an expert deliver your fish when you do a new stocking? If so, you might ask them to bring a good DO meter and test your pond in a few spots and depths and start collecting some data. More data always helps make a better decision.
