The terrarium is 29 gal. and he's the only LG in there. He has never had a great appetite since we purchased him 3 mos ago, he has three lamps (2 daylight and one UV) and a heating pad (temp 70? at night 80-ish plus during day, substrate is sand from PetCo, water always available along with meal worms and crickets, I have a small shedding plastic tupperware container with a handful of peat moss in that I wet every other day, he has a hiding rock and some things to climb on. Temp and humidity seem okay; around 80-ish during day hours and humidity seems to rise at night to about 30% and daytime 15-20%-ish. He's getting too thin and I am very worried.