An all natural antifungal remedy for the treatment of fish diseases. Patented formula derived from Pimenta racemosa (West Indian Bay Tree), a proven natural antifungal. - Rapidly treat fungal infetions on the body and fins - Treats internal and external bacterial infections - Safe for sensitive fish, reef aquariums, and live plants - Broad spectrum treatment prevents pathogens from developing resistance - 4 oz bottle treats 236 gallons.