i've read that it takes 3 weeks, 4 weeks on safe side for the itch parasite to die off. if lets say i waited it out, after 4 weeks, those weaker fish died and left those surving fish. does this means that there is no longer itch parasite left in the tank?
was talking to ML and was told that some reefer's tank have no itch for a few years. after intro of new fish, even after QT the itch came back again.