I plan to get one of the digital tools to measure humidity, but for now, I use one of those cheap ones that says desert/moderate/tropical and it almost always stays on the tropical setting. Because I have no drainage set up in my cages, I put my Chams in the shower for a half an hour 3 times a week. It seems to be working fine, I have not seen any real problems with shedding and they are always looking and acting healthy. My female is going through a stubborn stage and does not want to eat what I am giving her. She was getting crickets only from the breeder before I bought her, now I am giving her superworms, silkworms, tomatoworms and roaches. I think maybe I am expecting her to eat like my male, who is a pig. I have to watch his weight and make sure he goes outside on almost a daily basis for sunshine and a good romp around.