I was wondering what is the best way to get the humidity to stay consistant in my ball pythons tanks? I have been struggling with this issue. I have tried the wet towel over half of the lid and brings it up for a bit, but than it drops down to 40% humidity again pretty quick, misting only helps for a bit too. And what is the best level for humidity to stay at? I am aiming for 50% normally and 70% when in shed. I have 3 seperate tanks, a 30 gallon, a 40 gallon and a 60 gallon. Thanks for the help