When you say you haven't changed his substrate in awhile how long do you mean? Yes the tank size may have something to do with it, if it feels to small for him it will stress him out and then he wont want to eat. This is just a question, does he appear to look swollen at all? And im only asking because in the first picture under his chin kinda looks abit puffy and clear looking, not the nice white it should be. It may just be the picture, but thought I would ask.





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. Day temps need to be 28-29C with a degree or 2 drop at night. 
