So I didn't have a quarintine tank and I brought a new fish home that brought Ich with it! The fish was only in the tank for 2 days though. Anyways so I now have all of my fish in a hospital tank in a malachite green solution and Im wondering if my snails and crabs can have ich in a life cycle stage and possibly pass it back to my fish when they are ready to go back into the display tank? Thanks for the help!