That is a great article. I've read it several times over the last 3+ years and always come back to it for a great reminder.
alphadog808, One of the reasons for QTing all new livestock is to see if it develops Ich while in QT. Prisitne water alone will not cure Ich, just help a fish fight against it. If a fish in QT does devleop ICH, you can start a hyposalinty treatment.