So I have been reading on this web site, and others like it regarding ich and how to treat it/prevent it. How is it that people that are so set on QT every fish they purchase before putting the fish in the display tank, and yet they some how get ich after their system crashes or something happens to cause a great deal of stress on the tank? Ich rearing its ugly head even after cycling the tank and letting it go fallow for 8 plus weeks? If having a tank go fallow, plus always using a QT when introducing a new fish for the proper amount of time, and purchasing the new fish from a place that runs copper in their system to insure that their fish don't have ich or other diseases; then how is it that their fish still get ich??? I currently don't have an ich problem, but I am just trying to see the sense in the whole QT thing. I did have an ich problem I treated the tank and the ich is gone, assuming that I don't have an out break in 8 plus weeks then wouldn't my tank too be considered "ich free"? I'm really starting to believe that it doesn't matter how careful or what acclimation procedures you use your tank will always have ich present.