I think I'll be fine. Ever since I put the thermometer base in the tank, I've been at a steady 60%, sometimes dropping a bit to 55. Then when I spray the reptibark down a bit, it goes up to 75% and stays there for quite a while. A month ago when I was getting my tank together, I cut a piece of cardboard to size, cut a hole big enough for the lamp if I need to use it, and fastened it to the inside(prevents noserubs ) of the tank top with twisty ties. That seems to hold humidity in well. Around shed time, if I get tired of misting a few times a day, I might just get some sphagnum moss, and put some in the cage here and there.