I'd like more information on this as well. My pond is about 3/4 acre with two 10 foot deep pools. Like the OP I have bluegill and bass in my pond. This is the first winter I've not ran my aerator this winter at the suggestion of NEDOC and for the past 2 weeks its been frozen over. It makes me very nervous! NEDOC suggest that running the aerator when it is cold outside will chill the water too much and be hard on the fish. His logic makes perfect sense.....but I'm still nervous!
