QT is the way to go. I just by chance put mine back online for a "suspect" Copperband Butterfly we just got. Fish had some signs of light spots. Popped the 10 gal
QT online with some Coppersafe and the next morning the fish had some nice bright white dots. Talk about timing.
Check out some of your local Salvation Army stores or Thrift stores that sell used goods for charity (most the time). I usually see a 10 Gal
in the store when I go bargin shopping for cheap solutions. (Got an awesome heavy duty desk for a 55 Gal
DON'T try hyposalinity without purchasing a refractometer. Just a roll of the dice w/o one.
I actually read this one article on the website link provided above. This one fish keeper would actually fresh water dip his fish (Meth Blue too) about 1-3 minutes before going into QT tank.