Mark, I think my point is let the fish manage it. Healthy stress-free fish can do this all by themselves. The trick is to keep the fish healthy and stress free. Every tang I ever added got ich for day or two, then went away. In my last tank, "went away" meant for years.
New additions often get ich. If the whole tank of fish get ich, then there is something wrong with the tank, and wiping out this indicator with chemicals isn't fixing the root cause.
Help the new addition with added nutrition (with garlic) and they'll settle in fine.
__________________
Brad
|