IF you plan on running the aeration system during the winter, the airstation that you run has to be in 1/4 the total pond depth. i.e. 12' deep pond, it has to be in 3' of water depth with the one in the deepest part of the pond shut off.
Yep, that's the plan. I laid out extra airhose on the far diffuser so that I can bring it closer to shore in the winter.