Originally Posted by
LizStreithorst
It looks bacterial for sure. Your nitrate reading is quite high indicating that you need to do more WC. I like to keep mine at 5 although others settle for 10. Do large daily water change to make your water more friendly for the fish. I'm not sure what antibiotic to use on this. I usually go to Furan ll, but there may be something better in this case. Brian may have a suggestion.
For now, along with the very large WC, lower your temp to 82 and add 5 tablespoons of regular salt per 10 gallons. Worry not. More advice will be on the way.