My female triggerfish has passed away. I'm pretty upset about it because while she showed no signs of Ich, my male now has signs of Ich. After reading reviews from my LFS, I have come to learn there's dozens of other unhappy customers who purchased at the same time and all have Ich breakouts. The store is now fishless treating all their tanks...Sorry it took me a bit to get back to you. That is feasible, but imo it might cause more stress to the fish. In my case I just rode it out. Excellent water quality, nutrition, plus the addition of the UV helped me. Ultimately it is your call though.
So now I have a blue tang, purple tang, flame angel and male triggerfish that have confirmed ich, and of course... these are the fish I bought locally. All of my other fish are still somehow Ich free, but they are wrasses and clowns so that's probably why.
I am currently setting up a 30 gallon QT that I will keep on the other side of my living room. I will QT all new fish I get for about 44 days. 30 days of copper + deworm and then 14 days of observations. Once I have fully stocked my tank I will use it as a hospital tank and breeder tank. But I am wondering... if my fish already have Ich, is it even worth it to set up a QT tank?
Eventually I want to go fallow to remove all diseases, but I can't until I'm ready to upgrade tank sizes...