Ok, I started on my incubator yesterday. Got the thermostat and lights in. It went to 90 degrees within an hour so I thought ok its gonna heat well. Of course it was already in the 80's outside though. After let it run all night it made no improvement. Kinda surprised cause I have two 60 watt bulbs in it and I though that would be plenty from what I saw most people using. I did notice my door wasn't sealing as well as I thought so I will add some weather stripping. Also going to get a fan put in this morning. It is a wooden incubator with inside dimensions about 36x24x18 right now. Would some reflective insulation help also?