I'm curious how everyone goes about keeping their frog racks warm during the winter. I keep the majority of my frogs at my workshop, which maintains a lower average temp than my home. Previously I've wrapped my racks with clear-ish thick plastic in order to hold in the heat from the lights. It works great, but it kills my ability to observe my frogs. I have considered using a room heater, but I'm trying to keep the electric bill in check and there is some concern of a fire by leaving a room heater on unwatched. What other methods are you guys using?