Under tank heaters have helped some people, but personaly I wouldn't recommend it. We had one when we got our first snake and she was in a tank (before the collection grew and we had to get a rack lol) and after a few months it got incredibly hot without us being able to tell. It burned our snakes belly badshe's healthy now but I would avoid all problems if possible. I completley understand about the money for anything else, but it would definitly be best in the long run! Good luck!
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