Only one thing more... I wouldn't necessarily drop feeding as the water cools. It's actually going into their peak metabolism in that range so they will be hungrier and could grow 2 to 3 inches before winter if you feed them enough. Additionally cooler water eliminates your D.O. potential problems as it holds more D.O. and as temps drop unionized ammonia does too although total nitrogen levels can go up.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.