I used baytril and doxycycline to treat flesh eating bacteria disease in my sailfish. I alternated days and I used 68mg per 8gal water every other day and doxyxycline 100mg per 8 gal. I also completely changed the water every other day. I treated for about 2 weeks before there were no active looking lesions. It took 1 month until he was healthy again and could be placed back in the main tank.