OCTOZIN is a treatment for internal parasites such as those which cause Sleeping Sickness, Hole In The Head, Seawater Angelfish and Clownfish Disease, Malawi Bloat Disease and also early stages of Dropsy.  OCTOZIN may also be used to treat Whitespot in seawater aquaria where CUPRAZIN cannot be used.  OCTOZIN is harmless to invertebrates and algae when used as directed.  You will require three separate days of treatment to complete the course.