Thank you. I am going to do a water change and vacuum as much as i can. I have today and tomorrow. Mondays high here will be 31 but 10 overnight and the 20's for the high for a couple days so the ice will be forming. Would it be better if i put the pumps back in and have the steam and waterfall going?
with the fish supposedly dormant and the good bacteria essentially dead or inactive, AND with your aeration+pond breathers, I don't see any benefit to putting the pumps back. If you had one IN the pond and all it took was to plug it back in, then yeah, can't hurt. Do the water change (slowly, slowly), take out the leaves (even slower), vaccuum without stirring every thing up, and watch your fish for any clues that the water still is toxic in some way. If you've lost a lot of fish and they're out of the pond, the remaining ones shouldn't be stressed much as long as the ammonia comes down. If I'm not mistken though, ammonia poisoning has the fish flashing and gasping at the surface, behavior you didn't notice.
Good Luck; keep us in the loop moving forward. Hopefully you'll report normal behavior and no more losses.