I read the post you linked, and at the end Jay mentions:
So clearly 76 days isn't mandatory, as I had known, but longer than 45 days certainly can't hurt. I am nothing but patient at this point in my life, and I'm really enjoying my QT process, so I'm considering that 45 days as a minimum. Thanks again for letting me know about this post!
60 days seems to work the best. This is for marine ich, Cryptocaryon. It has the longest known resting state, so is a "worst case" scenario. Fluke eggs actually die out faster, 30 days will work for them, but to play it safe, go 45 to 60 days.
Jay