So I just picked up a nice 10 polyp blue/purple zoa three days ago. On the second day i saw my black urchin around the zoas. I did not think much of it as it moves around the tank all day. After working all day and came home to find my urchin in the same place. Humm thats weird, So later today this Urchin moves away from the spot and now I see the 10 polyps down to a single one polyp. It looks like it might make it but now sure...What should I do to boost its health back? Also what would everyone else do? h


