Any advice on affixing my great stuff back wall in the tank? I've go it all mad up and siliconed. I figure I just have to silicone it to the back wall, but don't want to make some stupid mistakes. Any dos or don't?
So your saying that your background is made up but not attached to the vivarium?
In that case I would put silicone on thick, and smear it flat with a putty knife or similar tool, everywhere that the background will touch the glass. I would put it extra thick at the edges to make sure that the silicone seals the background to the glass so no frogs can creep behind the background. If you spread the silicone past where the background touches the glass then use some coco fiber or whatever it is you used to cover your background to cover the wet silicone.