Jeff, if you haven't already, contact Ted Lea at http://www.cleanponds.com , he can and will answer any aeration question you need to ask him...Ted is a great guy and he is very near you!

IMO, aeration year round for you would be good, but you will want to move your diffusers to shallower water. You may only want to use one diffuser station and even add a timer...Ted can tell you the specifics.

BTW Jeff, where have you been for the last year? Your last post was in 8/09!