I bought my second herp the other day, a crested chameleon. This is much more maintenance than my leopard gecko, who does quite well with just a heating pad. I live in Southern California, so the temperatures are rarely in the low 50s and it's rarely less than 70 indoors. Jabba, my gecko, is healthy though lazy, and never gets particularly cold.
However, moving from a desert herp to a tropical herp has been a bit nerve-racking for me. I'm housesitting right now, and my chameleon is with me here until I go back home in the beginning of December. As such, my lighting is not in its permanent placement and both of my lights are shoddily clamped to an external lamp and resting just above the screen.
My worry is the temperature gauge never goes above 65 F. I'm using a Zilla combo humidity-thermometer. In one light I have a UVB Repti Glo 5.0 fluorescent and in the other a Zilla 50 watt Day Blue UVA incandescent. I also have a Zilla heat mat, same as the one I use for my gecko, under wood chips. Is my problem the bulbs, or the placement of the temp gauge, which is right in the middle of the terrarium, whereas the lights are on the right side? He doesn't seem to be bothered by the temperature, since he spends most of his time on the left side. I know chameleons can do okay in the mid-60s F, but I feel uncomfortable with having the temperature below 75 F.
Also, for nighttime, since my herps are in my bedroom, how does everyone manage night heating? Would turning the lights off be alright (he seems to sleep just fine with them on, though I may not) or should I invest in a sleep mask?