DYZZY Yes I got those jugs in there but mine never seem to get warm during the day. So I bought a little heater today. I have an electronic thermometer out there so I always know what the temp is and monitor it from inside the house. I think I should have left the heat up higher. It's running 47-49 in the GH and 41 outside. Hopefully that's not too cold for them. Sure will be a year of learning for me since I'm not very experienced with gardening and no GH gardening at all.
I am using those mylar blankets and I made a bit of a "tent" around the tomatoes. The GH has been staying 8 to 10 degrees warmer than the outside with just a lightbulb. But tonight is the coldest so far. Well, I may learn from tonight that I should turn the heat up just a little more.
I'm not too worried about the radishes, spinach, lettuce, herbs or mammoth jalapeños in there. I think they can take it colder, right? They are on the opposite side of the GH and stay one or two degrees cooler than the tomatoes. It's only a 6 x 8 GH. Hope my tomatoes don't get too chilled. Too cold and late for me to go back out there tonight.
UPDATE. 40 outside and 55 in the GH so the heat is kicking on. Ok. Now I can sleep!
