I'm with Terry here -- not that I disagree with the points that Erik and Cory bring up... but the simple fact is, Cryptocaryon irritans is a parasite, not a sickness... there is no getting over it, and as long as there is a live fish body in the tank it will ALWAYS be there. Kenya, you may not see outward signs of ich on your other fish, but I can guarantee its there.

Like I said, many people just add purposeful cleaners such as neon gobies and cleaner shrimp, and hope for the best -- many people have no problems like this. That doesn't change the fact that the parasite is still dormant in their tank, and could flare up at ANY time.

Again, just my opinions -- and as far as quarantine stress, its my personal opinion that if you can't maintain well-balanced tanks outside of your display, you are likely having MAJOR issues inside your display.

-Justin