jwmahloch

Good luck with your greenhouse. you might try using bubble wrap on the inside panels as insulation. I used double sided tape to put mine up, make sure the bubble side is against the panel. I think the large bubble wrap works the best. Right now I only have the side panels insulated. I just ordered more from a seller on ebay. Much cheeper than buying retail. Another important thing is to insulate the inside of the door. You might check you the greenhouse megastore.com. they have a calculator to determine how powerfull of a heater you will need. Look at the BTUH rating. I have found out that my 1500W electric heater will keep my greenhouse at 58 until the outside temp gets down to about 20, below that I have a small kerosene heater that I have used a couple times in addition to the electic heater. Another thing that really helps is a solar powered roof vent opener (I bought one on ebay for $25).

I also have plants in my basement under grow lights, my plants in the greenhouse seem to like it bette.

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Jeremy