Looked over at the tank and saw one of my Zoa frags (with rock they are on) moving slowly along the front of the tank. Sure enough, my little 2” bull dozer urchin was dragging them to a new location. The rock is three times bigger than the urchin. Second time I’ve had to detach it from a big rock he was dragging around. I’m thinking it’s time to trade him in for a smaller model. He gets any bigger and who knows what he’ll start dragging around the tank.



