found this:
1 packet= 1 capsule
Do not put it in the tank.
The Furan-2 dip for zoas is as follows:
1 cup tankwater
1 packet/capsule Furan-2, mix well
Place zoas in dip for 15-30 mins, depending on severity of infection/problem.
You MUST repeat the dip for 3 days in a row if this is for zoa pox. If it's for something else, not sure if you need to repeat for 3 days but I do know it wouldn't hurt anything to do that.
Rinse zoas well in SW before returning to tank.