I read an article somewhere on the net and you can never really get rid of ich, the best you can do is control it. Water temp is key and also use garlic extrac. It works!
It is certainly possibe to get rid of ich. A very careful observer with a properly maintained QT usually will not experience ich in their display tank.
i agree, there is actually lots of info that says is not always present... and its funny cause all the lfs guys all say that too, but after i hypo'd and killed the ich, never had it again...
so if they don't have ich, stress will never give it to them unless they already have it