MCGRAYEL ALGATEC SUPER ALGAECIDE 64 OZ 8/CS

Will not interfere with pool water pH or sanitizer levels and can swim immediately after treatment. Kills rather than starves algae and prevents algae regrowth due to biostatic inhibitors. Kills most algae in 8-24 hours and black algae in 7-10 days. Salt pool friendly formula contains no metals, Bromides or quats. Works synergistically with Chlorine for fast clean up. Non-staining, non-foaming, non-metallic.