lol ivanfj, they are both abbreviations for the same parasite. I use Ich because it is spelled ichthyophthirius (yes I did look that up). But i guess Ick is spelled like we pronounce it, so whatever.
As to the garlic, it is worth adding IMO if just to see the tank go in a frenzy for food. When I add garic soaked food in there, EVERYTHING comes out looking for it, shrimp, snails, crabs, worms, and, of course, fish.