I wouldn't say don't use a watt heater, it's fine to use one. I was just saying that 60 watts might be a little over kill, but, if your temps are 80 or close, then it must be fine. The substrate temps are really not critical to their health. As I said, if the air temps are good, then they will be fine. I'm just uncomfortable using heating mats myself because of the burn factor, that is not to say that they will surely scorch your frog, just that I'm not so comfortable using them. They would certainly raise the ground temps, but not so much the air temps, the light will do that. As far as calculating the temp, I use a round ZooMed reptile thermometer. I use these because the tape-like fish ones are good for measuring the temp of the glass it's stuck to, not the air temperature around it, thus the round ones work better in my opinion. In case this is what you were thinking, my tank isn't "finished" in that pic. There are no lights on top because it is outside and has just been cleaned. I don't use any supplemental heating for them as they are in my reptile room where is is always warm. I think I answered all your questions, but if I forgot one, let me know. Let me know if you have any other questions.


Evan

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