My sense is that cooler temperatures are a time where restarting aeration can be done with lowest risk. The water saturates at higher levels of DO and the oxygen needs of fish and other biota is subdued. I think most do not aerate in cooler temps because they don't need any more DO.
One question speaks to me.
Where are the fish? If they are near bottom in the deepest water, what are the risks of mixing the water?
