Suncoast Chemicals Super Black Algaecide is a unique copper algaecide specially formulated to kill black pool algae and prevent black algae growth. Super Black Algaecide also works against other forms of resistant pool algae. Our most popular algaecide for getting rid of black algae. Attacks deeply rooted black algae and wipes it out of your pool. Non-clouding, non-bleaching, and non-staining (Note: Make sure pool water is properly balanced before application of Super Black Algaecide). Safe for vinyl, plaster, colored and fiberglass pools.