Oh...and for what it's worth, if you look back at the other post mentioned here, the tang is right there in one of the pics swimming around...it was with a post that said "just after adding 45 lbs of LR."
Anyway, just thought I'd throw that in here.
Like Beth said, don't assume the Ich is gone. It doesn't go away on it's own.
Cleaner shrimp will help get rid of it (don't add one until your cycle is finished), but hypo, or other meds are the only way to really get rid of it. I still would consider using Kick Ich in your situation.
Glad to hear it is eating and swimming fine though. Keep a close eye on it.