Patented formula derived from Pimenta racemosa (West Indian Bay Tree), rapidly treats aquarium fish fungal infections. API PIMAFIX harnesses the unique antifungal and antibacterial properties of the West Indian Bay Tree for a safe and natural remedy. Quickly treats fungus or cottony growth, mouth and body fungus and reddening of the fins and body as well as internal and external bacterial infections. Broad-spectrum treatment prevents the development of resistant strains of disease-causing organisms. Safe and effective API PIMAFIX will not discolor water, affect biological filter, or pH during treatment. Will not harm live aquarium plants. Safe for use in freshwater or saltwater aquariums including reef aquariums. 8 oz treats 474 gallons.