Cover your filters, only eat algae. I had one that destroyed my whole tanks algea in days really cool till it decided to try out the hob intake. Best thing to do is let it eat all your algae because it won't take nori (ime) then swap for some frags or sell it in your local reef community, someone else has a algae problem as well lol or figure out what it will eat as a supplement to algae if you want to keep it