He came with my liverock from LR.com, which looks great (29 gallon with 15 #'s of gulf, 15#'s of keys and 10#'s base). My question is whether or not the sea urchin should be removed or left in the tank. I heard that they will eat the coraline algae. I don't want that because it looks really good right now. Any advice for beginner?
Thanks
Thanks