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You may want to check the calibration of your thermometer in a glass of ice
water. The bottom of the pond should be nearer 39 degrees at this time of year, or possibly even warmer. Ground temperature should be heating the bottom of the pond, some. -- RichToyBox http://www.geocities.com/richtoybox/pondintro.html "Scott M." wrote in message ... I have a pond that is around 3 1/2 feet deep. Right now, my thermometer indicates that it is 0.1 degrees Celcius down there at the bottom. The Koi and Goldfish are still alive but isn't that a little too cold? It's not even winter yet. I have a bubbler to keep the surface clear and a floating 1250 Watt heater if I need it later, but I was thinking of lowering a low wattage heater to the bottom of the pond just to make sure the poor fish don't freeze. Is this a good idea? BTW, my pond photos are at http://pg.photos.yahoo.com/ph/murchi...mK9ICBHtrk1kvG Scott |
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