Spa Water pH Down

AquaPure Spa pH Down is the ideal product to reduce high levels of pH in the spa water.

The ideal spa pH levels should be between 7.2 - 7.6, promoting bather comfort, optimum chemical efficiency, and protection of spa equipment. Test the pH of your spa water and if it is above 7.6 use Aqua~Pure Spa pH Down to lower the level.

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Full description

AquaPure Spa pH Down is easy to handle and dissolves quickly, ensuring even distribution throughout your Spa water.


  • Safe to handle

  • Soluble in water

  • Long shelf life

  • No fumes

  • Lowers pH in swimming pools & spas

  • Spills can be cleaned more easily than liquid acid

  • Suitable as a stain treatment in some cases

How to Use:
  1. Pre-dissolve the product in a clean plastic container at a maximum rate of 10g of product per 1lt of clean warm water. Stir well to ensure product is fully dissolved. Carefully add the resulting solution to the spa whilst the pump(s) are turned on, preferably near to the water returns to aid distribution.

  2. After a minimum of 30 minutes, recheck the pH level and if necessary, repeat the treatment until the ideal pH is established.

Dosage Rate:

If pH is 7.8- 8.0pH add 6g / 1000L

If pH above 8.0pH Add 18g / 1000L

  • Test and Monitor Regularly: It is recommended to test the Spa water’s pH regularly, at least 2-3 times a week. This helps by staying proactive and make small adjustments as needed, preventing drastic pH imbalances.

  • Balance Alkalinity First: Before addressing pH, ensure the total alkalinity is within the recommended range (usually 80-120 ppm). Proper alkalinity levels act as a buffer, helping to stabilize pH fluctuations. If the alkalinity is off, adjust it before tackling pH adjustment.

  • Maintain Proper Circulation: it is recommended to run the pool pump and filter system for a few hours after adding Spa pH Down. Proper circulation helps evenly distribute the product and promotes consistent water chemistry throughout the pool.

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