Pondbosses - Thanks for all the replies regarding winter pond aeration. Very interesting subject. I would gladly pay for winter aeration costs, if I knew it was required. (I wish the O2 analyzers were not so expensive.)
Sounds like more fish are killed by deep water aeration mistakes than if there was no aeration at all.
I do not think anyone has yet posted that they actually measured low dissolved oxygen levels in the winter. Several people have reported winter fishkills, low O2 was assumed, but was it proven by actual measurement??
I would be very interested in winter O2 data reports, especially in the worst case conditions, high fish density, frozen lake with snow, no aeration.
Many Thanks!
