Ponds In Winter - Knowledgebase Question

Cherry Hill, NJ
Question by dtyminski
January 21, 2000
Our pond is frozen and we are worried about the fish, what should we do?


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Answer from NGA
January 21, 2000

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In general, as long as your pond does not freeze solid, the fish should survive aslong as their air supply is sufficient. The danger is that gases may build up beneath the ice, so you need to make an opening in the ice to allow them to escape. You may notice that the ice melts along the outer edge of the pond, and this may be sufficient. If not, you will need to make a hole. Smashing a hole is not recommended because it may jar the fish. Instead, you could set a pot of boiling water on top of the ice to melt a hole, then keep that hole open. Some gardeners will run a small heater manufactured for this purpose or will keep a small bubbler running to acvhieve the same result since moving water does not freeze.

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