Hey,
First of all you may want to post this in desease & treatment.
I haven't had an ick break-out yet, but I did see a couple small white specks on a new Perc I added last month. I did a small water change and kept my lights off for most of the day to remove stress from the little guy. A couple days later he was fine.
I have seen several posts on this bb about using food soaked in garlic juice to treat ick. (Do a search on garlic to find out details.)
Anyway, I'm sure someone with more experience will post a better answer for you. Good luck!
Dan'l