@Dragonscales: Looks awesome! Try putting aquarium-safe silicone on the part of your ledge that goes against the glass. I made the same kind of ledges for my crested and leopard geckos, and I covered the entire backs of them with a layer of silicone so that they "grip" against the glass and don't slide down, and used the 3lb magnets like you did to keep them up. I'll take some pictures later! They aren't super strong or anything, but my geckos are 40 - 70 grams and it holds their weight just fine.