AP,
I'm at half pool. We have about 4 inches of ice covering and the aerator going 24/7. Opened up the aeration pattern and increased the air line size this year. The opening in the ice is twice as large as last year.

My super rainbow is still alive as far as I know. Re-stocked him from his summer home in a 50 gallon tub, in October. What do you think about putting in some brookies through the ice?