I unplugged and removed it. We'll see what the temp does on that side. I may have not needed it at all. I think I still need a thermostat for my lamp though. It scares me to see it near 100 degrees on the floor level. I really don't want python jerky. Lol. Now I'm really considering converting my aquarium into another terrarium. I'm sure one heat lamp could maintain hot and cold sides in a small 10 gallon. I have a second ceramic light fixture. It's a shame my Petsmart carries the screen tops but not the locking clamps.