Metal Gone scum pea gravel or something similar

pea gravel or something similar in its zippered pouch

Compatible With: Chlorine

and easily rise with the touch of a button

pH buffered so it does not affect pH level

Electric or indoor or outdoor wood burning heaters

Metal Gone scum pea gravel or something similarPRODUCT DESCRIPTION Easy to apply, this concentrated formula prevents iron and other metals from building up in your spa. Use with each refill to quickly neutralize metals in your spa and prevent unsightly stains. FEATURES: Prevents iron and other metal buildups from staining spa finish One time application good until next refill ADVANTAGE: Reacts with any metal contaminant before it has a chance to form unsightly stains. Use during start up.