I bought this huge zoan rocks from a LFS. It looked so pretty and clean at the store but when I got home, I found out the rock was riddled with hitchers. There is bubble algae, bristle worms, brittle stars, bunch of tiny pink slugs looking thing crawling around, tiny stuffs swimming and crawling. I don't think I can physically removed all the them. Is there any good way to get rid of them without harming the zoan? It's a given that I wont be going back to that store anymore but I paid a lot of the zoan so I'd like to be able to keep them.