Advertisement Hey guys I need some help. I recently got a Versi sling and put it in a small plexi box. It is about an inch and the box is about 6 in tall and 2.5 in wide. I put bed a beast snbstrate and a small piece of store bought wood in there and a small fake plant. It started to web and I thought it was doing great. I noticed a web like material on the bottom of the wood connected to the substrate I thought this was just the Ts webbing. After closer inspection, it looks more like mold film. I took the T out and it definitely looks like some kind of mold. What did I do wrong, I have never had a mold problem but have also never used this substrate. Was it too wet????? I am going to redo the enclosure but want to avoid this I the future...... Any ideas?