Scott wrote
I was thinking of lowering a low wattage heater to
the bottom of the pond just to make sure the poor fish don't freeze. Is this
a good idea?

Hi Scott, you've got a kind heart :-)
Mother Nature designed fish to survive the cold. As long as they don't freeze
solid they'll be fine. You've done the right thing in preparing to keep a hole
open in the ice
with your bubbler and floating heater on standby.





kathy :-)
3000 gallon pond
800 gallon frog bog
home of the watergardening labradors
zone 7 SE WA state