Nope, and still have the same fish i have had for over 2 years.
everyone is going to have a differant opinion on quarenteneing fish, and mine is.
Why stress them out more??
you wouldnt have bought the fish if it had ich, or disease on it right?
i have another 120G that is always up and running as a hospital tank, and in good conditions, that i use if a fish gets hurt in my tank.....