i would definitely add sphagnum moss into the hide. you'll probably need to wet it daily. i currently use a mix of top soil and coco coir. the top soil is heavy so it stops the coir from fluffing up and getting messy. i spray the humid hide daily and the entire enclosure weekly. i have a che hanging in the humid hide (just a giant rubbermaid container with a hole for the for door and in the top for the che to hang) and i notice it dries the top out but leaves the bottom wet so i added a heating pad under the rubbermaid container.