Lawrence,
I remember reading one of your threads where hyposalinity didn't work for you, is that right?
Now you are trying copper?[/QUOT
I never had success with hyposalinity

and some ick strain are resistant to hyposalinity. I am doing cupramine and prazipro just like most LFS so far no ick resistant strain to copper and unlike hyposalinity it kills velvet.
SDguy and Copps proven.
Tank transfer is also a good way to prevent ick but I never try it.
Right now I am qt for velvet not for ick since I can't catch my cleaner wrasse for me to go fallow.