[MrTuskfish]

Brooklynella is a quick killer. The only proven treatment I know of is Formalin. It doesn't seem to be available everywhere, but there is a common product that combines formalin and mala. green....I forget the name. IMO, the fish will be dead before you find out that herbtana doesn't work. You have to treat in a QT and treat all fish that have been exposed to it. Even with quick treatment, this is nasty stuff. Imo; preventing Brooklynella (and velvet) are even bigger reasons than ich to use a QT.