As I remember a conversation with JR on this last year, the target would be to have the pond ease down to 50 for two weeks of total fast. Then a very slow warm up (like 1-2F per week) with sporadic feeding using wheatgerm until the pond hits ~60 and then start slowing mixing in some other food.
But....I have slept since then. I am buildng the annual winter pond cover today. Thank God for 2x4s and 6 mil plastic!!!
