"KLEAN STRIP" GREEN SAFER MURIATIC ACID *128 oz. *Safer than standard muriatic acid *Etches concrete, brightens concrete and masonry, removes excess mortar from bricks, controls PH in pools and spas, and cleans stains from algae, barnaclesand scum from boat hulls *Better for the environment *90% lower fumes than regular muriatic acid *Less evaporation of acid into the environment *Jug *Discovery ACC