Protozin whitespot and fungus treatment from Waterlife 500ml. Protozoacide and Fungicide. For use in tropical, freshwater and colwater aquaria. Protozin must not be used in aquaria contatining African Mormyrids (i.e. Elephant Longnose etc.), Pirahna, rays, sturgeon/sterlets, snails, shrimps or when related species are present.