well there is a lfs (the only close one to me) that has a pretty good sw fish selection, but almost all of their fish are in a divider tank and they all are connected and i have seen a couple of the fish with ick! which means they are all more than likely infected...my question is, would it be ok for me to get my cleanup crew from these tanks? i have heard that snails, crabs, feather dusters ect... dont carry it