I used to have a setup like the one you have, but I prefer a half and half setup ( this is what I have now). Fire Bellies are very social and I would suggest you get a buddy for the one you have. I have 5 and they are so comical to watch. Maybe yours is depressed. Was he all alone in the pet shop where you got him? You could easily fit another one in your 10 gallon and I bet your toad would be so much more active.