Not only that but igs actually get poor spine shed if they are kept under a heat lamp on that range of temps. Rainforests get quite hot, however in my experience igs do just fine at 100 hot spot. Worse then underheating them is overheating them.A. gigas;5084533; said:I agree, for something like a Sav or Argus, or something of that nature, that lives in desert-like areas, 120 sounds good.. But for an iguana? I don't think the rainforests get quite that hot...