In message , clokemg
writes
snip

Are there any hints and tips anyone has for winter pond care that may
not be mentioned in reference books.

1 Tennis ball in water - can be taken out if pond freezes over,
which is likely according to the forecast for the coming winter.
2 Never smash the ice.
3 I feed wheatgerm in winter but the fish don't really need
anything at all if the balance of the water is correct.
4 clear away all dead leaves etc. during autumn.
--
June Hughes