low wattage CHE's are a good idea - they provide radiant heat and don't dry out the cage as much as incandescents, and would be much more effective than a UTH.
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4.1 snakes, 4.3.2 crested geckos, 0.1 gargoyle gecko, 0.0.2 red-eyed tree frogs, 2.0 devon rex cats, 1.0 betta, 0.1 sun conure, 1.0 lovebird