I wish I could leave the door open, but that lets the heat out. I can't keep an 80 ambient temp with the door open. My house is really draftyI've tried all sorts of things to keep heat but the only thing that has done it is the closet.
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Room lighting isn't an option, nor is cage lighting. With the door open, the heat gets out so room lighting doesn't work. They're in tubs, so there's no source of cage lighting. Literally, sticking a lamp in there is my only option...