NT Labs Aquarium Octozin 250ml is a specialized treatment designed to effectively combat internal infections in freshwater aquarium fish, including Hole-in-the-head disease and Bloat. This product is suitable for a variety of fish species, especially tropical and African cichlids, and targets the bacteria and parasites responsible for common issues such as visible lesions, pits, and abdominal swelling. Formulated with Dimetridazole, Octozin provides a reliable solution against protozoan parasites and internal bacterial infections, making it ideal for fish exhibiting symptoms like holes near the head, bloating, protruding scales, trailing feces, or reduced appetite. The product is user-friendly, accommodating both beginners and experienced aquarists, with a dosing calculator available on the NT Labs website to ensure precise application based on your aquarium's volume. Each 250ml bottle can treat up to 1,000 liters of water. NT Labs Octozin is a dependable internal treatment that supports fish health and facilitates swift responses to visible signs of disease, making it an essential choice for both routine care and prompt intervention in freshwater aquariums.