Yesterday at the Atlanta repticon i got a 4-5 month old crestie. he is currently living in a 12x12x18 exo terra (about 11 gallons), with soil/moss substrate. He has a fern and 2 vines (artificial, i got the rainforest kit) and a rock background. My only problem is, i am having trouble keeping the humidity at 50% or higher. Also, he is ridiculously inactive in the daytime. Is this normal? Or is he just getting acclimated? Final question, i have a heat lamp in the daytime to keep it above 70 degrees. I left it off overnight, but the temp dropped to the mid 60's. Should i keep the lamp on for him?