"Harry Ziman" wrote ...
We have a couple of garden fountains - the type with two or three
scallops, water overflows each one into the one below and with a "hidden"
pump in the bottom scallop to pump water up to the top again.

My question is about the winter - is it necessary to remove the pumps to
avoid them from being frozen or do they survive freezing?

Yes it is essential to ensure they don't freeze, water expands on freezing
so they would suffer damage.

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Regards
Bob
In Runnymede, 17 miles West of London