11-15-2009, 09:19 AM
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Is your pump submerged? I live in Ct. where we get several inches of ice on the surface each winter, and I leave my pump on year-round. But if your pump is above ground, as Dawn said you might want to shut it off when it gets real cold. Since my pump is submerged, and is on the bottom of my pond, it isn't affected by cold weather. I belong to a large pond forum though, and a lot of people do leave their pumps on year-round, even in severe weather, without mishap. However, if the water surface does frequently freeze over on your pond, you might want to look into some kind of surface heater. You'll need an opening in the ice so trapped gases can be released, as they are toxic to fish. But if as you say, your temps rarely drop below 50 degrees I think you should be fine.