Cape Cod ponds by Absolute-Aquatics

These temps,are dangerous for your fish. They will be on the bottom where the ground temp will keep them warm. That is why the depth of your pond is so important.Dont run your pump that would be taking that warm water off the bottom and sending it into the super cold air that will chill it below what your fish can tolerate. Don't confuse not freezing because it is moving with with staying warm . Moving water can get way colder them what the fish can stand.If your pond is not deep enough get a submersible stock tank heater from farm supply the fish will hover around it !