<a href=showthread.php?s=&postid=14936130#post14936130 target=_blank>Originally posted</a> by returnofsid
I think there's a bit of a misunderstanding here. Let's see if I'm understanding you correctly. You were treating your Clownfish in a QT tank, for Ich. In the meantime, you have a Damsel in the display tank, that has been subjected to Ich. Correct?
If this is the case, you'll never be able to be sure that your display tank is Ich free. All fish have to be removed from the display for at least 8 weeks.