i ran across and awesome tank that had a rock wall and hides and all built in on a reptile auction, but i figure i could do it myself for less than what it was being sold for. i found a site that has a custom beardie cage with the directions and other links to custom enclosures. i want to create a custom enclosure for my leopard geckos but i want to make sure the items needed are safe, and if not could anyone give me some advice? here are the items that the sites have mentioned: 1 site Polystyrene Tile Grout Washed Play Sand Liquid Nails Foam-In-A-Can Acrylic Tile Grout Sealer another site Polystyrene/Styrofoam Paint Thinner/White Spirit (to create realistic holes) PU Foam/Insulation in a can Silicone (which I personally don't recommend, as it takes a long time to dry) or something else to stick the polystyrene to your wall (I used a hot glue gun) Tile Adhesive (the same stuff you use to lay the tiles in your bedroom) anything u guys see that may he hazordous? anything u guys can suggest?