Thank you for sharing.Check out the following 2 videos on Ich which was hosted by Chris Biggs featuring Dr. Denise Petty, DVM, a certified aquatic veterinarian
Understanding ICH Episode 1 and Treatment and Prevention of ICH-Episode 2
I found the info very informative and while I have not knowingly had Ich in my tanks, the videos do explain that identifying if fish actually have Ich is not as easy as we have been led to believe without taking actual samples from suspected fish and viewing them under a microscope.
I know duanes has contributed mightily to using 3ppt salt treatment for Ich and Dr. Petty suggests 5ppt should be readily accepted by most fish we keep in our tanks with a few exceptions.
Let me all know what you think of the videos!