Bump up the humidity right away. Petco and petsmart and petland all sell the versa top. You need one for a 20 gallon tank and that will alleviate the humidity requirement. It is a folding dual sectioned top that comes with a plastic attachment that will cover the top of the tank. Just put some holes in the plastic part to facilitate the oxygen exchange. It works very well in raising the humidity. It also raises the temp in the enclosure. Good luck. Stay in peace and not pieces. A.C.