Waterlife Octozin Tablets are an effective treatment for internal parasites that cause a range of fish diseases including Sleeping Sickness, Hole in the Head, Seawater Angelfish and Clownfish Disease, and Malawi Bloat Disease. It can also treat the early stages of Dropsy and Whitespot in marine aquariums where other treatments cannot be used. Octozin is safe for invertebrates and algae when used as directed. A full course of treatment takes three days, with the medication remaining active for up to three days after the last dose. While parasites are eliminated immediately, visible improvements in fish may take up to seven days. This product is suitable for use in saltwater, tropical freshwater, and coldwater aquariums. Available in 21, 80, and 200 tablet counts.