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Keep your pH in check with SpaGuard® pH Decreaser, a safe alternative to muriatic acid that makes balancing pH a breeze.

  • Granular sodium bisulfate
  • Slowly lowers pH
  • Helps prevent scale buildup, cloudy water and eye irritation
  • Safer than muriatic acid
Product Info

Available sizes: 22oz

  • 93.2% sodium bisulfate
How To Use
  • If pH rises above 7.6, add pH Decreaser with circulation running and aeration off. Determine amount by performing an acid demand test in a BioGuard test kit or see the approximate dosage chart below.
  • If controlling the pH is a continual problem, test for total alkalinity and adjust as necessary or use Spa Sentry.
pH 7.6-7.8 7.8-8.0 8.0-8.4 Above 8.4
pH Dec. per 200gal 1/2 tsp 3/4 tsp 1 1/2 tsp 2 tsp
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