I had my Klein's butterfly in QT for Ich, and he developed a secondary bacterial infection in his eye. It just balloned out and I thought for sure it was going to burst. I put him in a 5 gal tank and followed the recommendations of the site below.
http://www.aquaworldaquarium.com/treating_marine_fish_for_bacterial%20Diseases.htm
I used Trimethoprin/Sulfadimidine medication for 6 days. I've run out of meds, and his popeye isn't 100% cured, so I may switch to Maracyn-two because I have it and my new order of meds is not here yet.
This is his progress so far:
Day one in QT for Popeye Day 2
Day 3 Day 4
Day 5 Day 5
Day 6
http://www.aquaworldaquarium.com/treating_marine_fish_for_bacterial%20Diseases.htm
I used Trimethoprin/Sulfadimidine medication for 6 days. I've run out of meds, and his popeye isn't 100% cured, so I may switch to Maracyn-two because I have it and my new order of meds is not here yet.
This is his progress so far:
Day one in QT for Popeye Day 2
Day 3 Day 4
Day 5 Day 5
Day 6