Can a greenhouse keep a pond heated?

Lepisosteus

Potamotrygon
MFK Member
May 20, 2014
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Ontario, Canada
I recently was involved in greenhouse operations and the greenhouse I worked in stayed at a constant 65 degrees throughout winter. There was also added heating but this was only needed as we had a really bad winter here in Ontario. In my opinion you'd still be better off adding a 500 watt titanium heater or just add heat to the entire greenhouse
 
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