I had a ZooMed 10'' clamp lamp with a 100w ceramic heat emitter, that kept my 2x3 c&c cage cooler than I'd like but still within a safe range, but it stopped working, I returned it and prepared to order a new one. In the meantime I purchased a 5.5'' ceramic lamp (also ZooMed, rated for up to 100w) and set it up, flat down on a grate over my cage, and wow at first glance it worked so much better! The thermostat (ZooMed Reptitemp Digital Thermostat) easily keeps the cage in the 76-78° range. My only concern is the area right below the lamp hovers at 81-82° degrees when the lamp is on (which admittedly isn't very often, I use multiple fleece liners that seem to hold the heat in the cage really well). I checked with my thermometer probe and the heat disperses very quickly, it's only that warm in that one spot. My question is, is having that much variance in temperature in the cage safe? It doesn't seem to be bothering Caspian any, he's running around and happily digging in the digbox (which is directly below the lamp, in that warmer area, he's actually buried in the attached picture). He's got a ceramic tile in his cage and I've never seen him lay on it or do anything other than push his toys into it. I just don't want to do anything that'll potentially hurt him.