My Infected Fish was in a large pond-10,660 gal. 7.8 ph,0.0 A, 0.0 Ni, <50 Na—it had what I thought might be bacteria or fungus. I have 15 other fish that did not have and never showed signs of having the problem . I finally caught the black fish (4 hrs) and placed in a 200 gal. Quarantine. Fish eats as normal. Started treatment (see attached)——
AFTER 59 DAYS THERE IS ON CHANGE...TODAY I MOVED TO A 100 GAL. QT W/100% WATER CHANGE...
Your advise would be very much appreciated.