Hikari Metro+ is a specialized antimicrobial treatment formulated for freshwater and marine aquariums to help manage protozoan and anaerobic bacterial infections, including conditions associated with hole-in-the-head disease, internal parasites, and certain intestinal disorders. Powered by metronidazole-based therapy, it targets harmful pathogens while remaining gentle on fish when used as directed. Easy to apply and well-suited for hospital or quarantine tanks, Metro+ supports effective treatment with minimal stress to aquatic life. Ideal for a wide range of ornamental fish, Hikari Metro+ offers reliable, targeted disease control to promote recovery and help maintain a stable, healthy aquarium environment.