We developed this one for finicky eaters that still require treatment.  Active ingredient in Furan 2.  It is an antibiotic drug that may have anti-protozoan properties that can also be used as a preventative.

Effective against Columnaris, Flexibacter, Black Molly Disease, Flavobacterium columnaris, Bacterial Gill Disease, Aeromonas, Excess Body Slime, Cloudy Eye, Streptococcus, Furunculosis, Fin and Tail Rot, Marine external ulcer disease and some protozoan infestations.  Useful in treating minor topical skin infections of freshwater and marine species.

Do not use with invertebrates

Treatment: Begin with a 25% water change.  Offer as the only food source for a minimum of 10 days.

Do not stop treatment early.  Complete all 10 days of dosing to avoid unwanted bacteria becoming resistant to medication.