Does anyone have experience with black ick? I have done several searches and read that once all the fish have been removed from the tank I should let the tank stay w/o fish for two weeks. I got all of my fish out last night and put them in a separate tank but was wondering about crabs and shrimp. Are these not at risk of carrying the illness? I would hate to keep all my fish in a QT for 2 weeks only to find that the ick still had some host that it could survive on. Any feedback would be great.