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SpaGuard pH Decreaser - 18 oz.

SKU: 42634BIO

This product will be available soon!

SpaGuard pH Decreaser - 18 oz.


SpaGuard pH Decreaser is a granular product that decreases pH and total alkalinity levels in hot water. Increases the effectiveness of the sanitizer when levels are in range.

What’s in the Box

  • 1 x SpaGuard pH Decreaser - 18 oz.


  • Lowers pH and total alkalinity.
  • Protects spa and equipment due to improper pH.
  • Prevents cloudy water due to high pH.
  • Balances water for bather comfort.


  • Sodium Bisulfate: 93.2%
  • Other Ingredients: 6.8%


  1. If pH rises above 7.6, apply product per ALEX Pro recommendations.
  2. Apply by broadcasting product evenly across the spa with the pump running.
  3. Circulate for 30 min. and retest pH.


    • Compatible with chlorine, bromine, ozone and biguanide sanitizers.



    Most products purchased from our online shop within the last 30 days are eligible for return. Please review our return policy to see the list of items that cannot be returned.

    Some major items that are non-returnable:

    • Gift cards
    • Electronics
    • Pumps / Motors
    • Hot Tubs
    • Closeouts
    • See return policy below for made-to-order/special-order return eligibility.