This new little GH is holding its own and staying around 55 tonight with only two 65 watt light bulbs. I put a short row of that pink foam insulation board around the walls but only about 3 feet tall. Also "tented" the mylar blankets around the plants inside. It's on the patio against the house so it has that for wind block plus the patio has a roof. It's quite windy and cold at 42 degrees tonight, and we had no sunshine today, so I'm pleased that the new GH is going to work out for the patio plants.
Meanwhile my HF GH is managing to stay around 56-58 tonight with a small heater. Glad I got the solar pool bubble cover on it, but I still added the mylar blankets around the walls today since it is so cold and going to freeze. Using those cheap ones from Amazon. They add a nice additional warming factor.
