One of the fish appears to be responding to treatment! The white spots inside the tail are starting to 'blur' and go way. They use to be very defined white 'grains'. Now they have turned into blurred areas in side the tail, and some spots are starting to clear. Today is day 4 of Prazipro and medicated food.
I have another tank with another 3 koi, one has started flashing, fun fun
I'm worried I cross contaminated the tanks, I've started treating that one as well. Hopefully I caught it before it gest to bad.