I think the viv looks great! If they still haven't eaten anything yet, have you offered maybe butter or wax worms? Mine can't refuse these. They do look a little on the thin side, but then mine are little gree balls of fun so it's hard to compare. I would keep the tank covered for now since it's not going to hurt them, and just bowl feed for now. Also I would be a bit concerned about ingestion of the moss.