w: I think I may wind up with a couple small siphon pipes running all winter if can get the pipe soon. They shouldn't freeze up if water running through them and I doubt if the pressure from surrounding ice would be enough to crush them.
Matthew: I emailed you. Concern about relying on windmill vs. batteries is that windmill might not always be turning to prevent ice buildup. Was thinking battery (even though less efficient) might keep aerator going when no wind present. You probably know better than I if that train of logic is feasible. Jeff