Originally Posted by Al Mc
Consider Hypo on all fish, especially tangs. I have found that if done properly you can have a fish in and out of QT/Hypo in about 4-5 weeks. Observe in normal salinity for first week. If eating and no problems take two days to get to Hypo level, then 3 weeks in hypo and 4-5 days to get back to normal salinity. If you see other problems, treat for those problems during the QT.
This is a good idea, especialy for tangs. Some fish I would not bother to hypo such as blennies. If performed correctly with an established qt, this is a safe method.