Hello All, I had ICH 5 months ago and went throught the 10 weeks starving the tank and quarantine fishes. Since then I now quarantine all my fish. Any way I bought a couple over the weekend and put them in the quarantine tank, 2 days later one broke out with ich. I'm currently treating them with Mardel Coppersafe which work for me the first time. How long do you need to treat fish with ich before moving them to display tank?