Yes, I followed the directions on them and shook them for the time it said to. (Put in 10 drops of bottle 1, mix good, shake bottle 2 for 30 seconds, add 10 drops of bottle 2, cap vial and shake for 1 min then wait 5 mins for results, etc.) I did all that.
I have 11 fish in a 55 gal tank.
4...