I will not put a space heater in because it is where I sleep, I don't like it warm to the level the tree frogs need in there. I ordered the cheaper of the thermostats that Paul recommended and the 60 watt CHE. The CHE worked really well last night and I hand mist so I control the humidity myself. The thermostat should be here today, was supposed to be here yesterday. If it doesn't work well, I'll have to spend the extra money later. In winter, as the heat comes on, that room is pretty warm and stable.