Hi, I have a 50 Gallon Tank with Live Rock and Substrate, 1 Cleaner Shrimp, Crabs and Snails, I had 1 Blue Tang, 1 Cowfish, and 1 goby,which came down with Ich and since died. I only have 1 Cardinal Fish and 2 Clowns currently in my display tank. Since then I have set up a 10 Gallon QT and I did try to treat the Cowfish and Goby with Cupramine, and they both Died. My clowns and Cardinal don't show signs of Ich at this point in time, but i'm thinking of moving them to the QT tank and keeping the Inverts and LiveRock in the Main display tank. Will the ICH die off from the Main Display Tank with No fish in there but with the Inverts, live rock and substrate still in the main display tank? If so how long do I need to leave the Main Display tank with the Inverts and Live rock in there without Fish? I heard 6 weeks? Any other recommendation is appreciated
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