How do you stop a kleptomaniac pincushion urchin ? Seriously, I keep regluing the frag plugs on the zoa rock to grow a zoa garden, and the urchin will plow through picking and choosing the zoas that have not yet encrusted the rock . Love the urchin and he cleans great so keeping him. Is there a stronger urchin proof glue? Is there a way to encourage the zoas to grow and multiple and encrust faster? Lost one yellow scrambled egg frag plug- no idea where the urchin hid it, but the rest that are not encrusted have been retrieved and glued at least once every few weeks.