Ka30P wrote:

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.

And there are even stories of goldfish surviving being frozen in the ice -
but rpg doesn't advise trying it.
--
derek