Spa Essentials 28304000 Stain and Scale Control for Spas and Hot Tubs, 1-Pint

Brand Spa Essentials Model 28304000 Color Green Size 1-Pack Prevents stains from dissolved metals including iron, copper and manganesePrevents scale formation from excess calcium in waterLiquid formulaLiquid formula prevents stains from dissolved metals including iron, copper and manganese. Also prevents scale formation from excess calcium in water. 12.5% 2-phosphono-1,2,4-butanetricarboxylic acid.