When I got up at 6 this morning it was 24 outside and 49 in the GH. I have the same solar blanket that Ken has. Had a 1500 watt heater and a Mr. Buddy propane heater going. Fan runs 24/7. The propane heater went out at some point after midnight though. I don't know what it's problem is. That's 2 nights in a row that it went out during the night.