About this itemBENEFITS: Kills green and mustard algaeUSE: Add a preventative dose biweekly and be algae freeCOMPATIBILITY: Works with bromine, chlorine, salt water, ozone, bigaunide and mineralsFEATURES: Will not foam; Prevents regrowth of algae; Triple-chelated formula contains 9.3% copperINCLUDES: One 16-oz container of Swimtrine Plus from Applied Biochemists