I not bought Any pod whatsoever but may have at least 8 different kinds that I've seen from ampripods,isopods,copepods,and orthropods,so they just came in on tiny little frags of corals and now at night on certain areas my sandned literally hundreds crawling about all next to each other ,fascinating watching them go about their business and sometimes get to watch them eat each other ha ha so if adding live rock or corals I don't think can stop it unless you qt and very agressive dipping procudure to make sure 0 get through but still then idk