Copper in quarantine?

[Baldy]

So do you think that the problems with hypo might be either not using it for a long enough period of time (either the fish in hypo or leaving the dt fallow), or perhaps not maintaining low enough salinity?

I've had ich come back in hypo because I was not diligent in maintaining top off and the salinity crept back up again. Could issues like these cause people to believe hypo isn't effective?