Humidity

I had to take the substrate out of my chams cage being it was getting soaked (It was the forest floor wood chips) and since I took them out the humidity in the cage has dropped like 10-15%. Any suggestions as to what I should do to raise it up again besides putting substrate in? Thanks! -Shandi

I have the back and one side covered with panda plastic. Works great.

Paper towels at the bottom of the enclosure.

I have slate on the bottom of mine and it absorbs water like concrete does and releases it slowly. Got it at Lowes, 12" x 24" tiles.