"Derek Broughton" wrote in message
...
MC wrote:
2) I've read bio filters are useless below 50 degree. So I won't run
it. Is it better to remove it from the pond, or just leave it? I
anticipate the heater will keep my pond around 40. I don't intend on
"heating" it, just keeping it from freezing solid.
40? _That_ is some amount of heat. If an aquarium heater works at all,
your surface temperature is going to be within a degree or two of the
freezing point. Forget the heater, use a bubbler.
How big a bubbler should we get for a 12x12 pond, 2-3 foot deep. We have a
number of small goldfish, but nothing bigger then 5 inches.
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