Joel, Do not buy the Foster and Smith trap... I have all traps sold by them including the GLASS one made exactly what northbayreefer has. So I have 3 traps and none work like my DIY version. All you need is patience and creativity in food baiting... I take it he nips at your corals... Since I can see you have baskets around them. Why not place one of the corals he nips at inside the trap??? Or better yet... Just leave the trap closed in the tank for a couple of days to get the fish adjusted to it *and think it's normal to have there... Then bait it in 2 days (after starving them) and they will all end up in it!