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Old April 20, 2021   #39
biscuitridge
Tomatovillian™
 
Join Date: Jan 2014
Location: washington
Posts: 490
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Your greenhouse must be awfully small. I use a propane camp stove with a fan,it does great,my greenhouse is 12x48 and it only costs about 2 dollars a night to keep it from freezing, and usually by morning it's 50 to 60 degrees in there.
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