Product Description This broad spectrum antibiotic contains just the right amount of Amoxicillin Trihydrate needed to control gram-positive and many gram-negative bacteria that can plague fish. Put an end to Dropsy, Fin Rot, Red Pest and other pesky diseases brought on by bacteria such as Aeromonas, Pseudomonas and Mycobacteria. Can use in both tropical and fresh water tanks. 30 capsules (250 MG each)