Hyposalinity question - QT tank - how fast can you lower SG?

[Delphinus]

The last time I bought a tang was 2001, my sailfin .. he got a few spots when I got him but it cleared up. I had cleaner shrimp at the time. I'm sure it helped but I always thought that when you had ich beyond maybe 10 spots that it was better to take proactive steps like QT, hospital, hypo, medication, etc.

Ever other fish I've bought either came from hobbyists (so were healthy) or just never got ich anyhow. So I never did QT before. I thought, sooner or later my luck will run out, and I couldn't live with myself if I introduced something that would compromise existing livestock. Especially the now 8 year old tang...

So .. I don't know. Maybe the old way I would do it (ie., hope for the best) was still better after all.

Too late now though. I mean .. even if I wanted to raise the salinity now, it would take a week to bring it back up. It remains to be seen whether they'll make it that far.