Stain and Scale Control | 42644BIO



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SpaGuard’s Stain and Scale Control enable spa owners to prevent and remove stains caused by iron, copper and manganese, as well as scaling caused by a high level of calcium. Stain and Scale Control’s formula bonds to troublesome metal ions in your spa water while simultaneously eliminating scale build-up that causes cloudy water.  Simply add this powerful liquid formula weekly to safeguard your spa or hot tub from these threats.


1 fl oz per 300 gallons of water per week.


  1.  Pour entire dosage directly into the spa water with the pump operating. Keep pump operating for at least 2 hours.
  2. Some existing stains may be removed by brushing stain with a spa brush after application of Stain & Scale Control (we recommend a scum bug.)
  3. Weekly application of 1 oz. per 300 gallons is recommended to prevent scale and stains.
  4. Clean filter according to label directions for your type of filter using SpaGuard Filter Cleaner & Degreaser. This will allow Stain & Scale Control to work properly.