Greenhouse at night

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I don’t know if you can see it in the picture above, but the greenhouse might be warming up to itself a bit!

I have had my little greenhouse enclosed since Sunday, and after four days of nice bright sunshine warming the thing up to as high as 90 degrees, there is now a 7.4 degree difference between outdoors and the greenhouse at 11 p.m, several hours after sunset.

Update 7 a.m.: outdoors 29 F, greenhouse 37 F.  I do have 5 gallons of 90 degree water in there, heated by a 200 watt aquarium heater.  Perhaps that explains the difference.

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