Just how important is this? My tank seems pretty dry. The substrate is bone dry after a couple days. I have an ufh, which keeps the temp at about 80-83f. Bella's skin looks fairly dry, not shining like the pics I've seen on here. She always seems to be bathing herself in her water, which might help, but because she's wet, when she moves around and the substrate gets wet, a white fungus starts to grow. I want to chage to paper, but she's VERY scared of me, because when I was handling her last week, she tried moving up my arm, and fell onto the floor, so I don't want to have to pick her up and move her while I take the pine ut and replace it with paper