I got hit by Ich like a month ago, the original fish that started with it (Kole Tang) died, then a the Multicolor Dwarf Angel began to act more passively and had some spots, I managed to removed him and into the QT he went, the other fish were impossible (At least by me) to catch, so left them in the tank, as of now still no signs of Ich, even the Multicolor is, after 4 weeks, back in the DT, I know crypto is still present in the system and it can come back at any given point, this is why I'm considering a big UV Unit (150W from Emperor), I think that the main problem with this parasite is letting it go out of control, if you keep numbers down, fish will be more prone to fight it.
Can someone correct me if I'm wrong?
Thank you