Ok. Have a dead minifridge that I want to turn into a lacto chamber. I have an STC-1000 ready for temperature control and a 120mm fan I can use to move things around in there, but need a heat source. Want to keep the temperature between 100 and 130. Have already tried a small space heater (has some sort of safety overrides that shut it off) and a hot pad (not enough heat). ceramic bulb? something I'm not aware of? Cheap and hackable is always a plus.