Place your order online for curbside pickup at our Festus, MO location. Shipping is NOT available at this time.


Your Cart is Empty

SpaPure Spa pH Decreaser - 1.5 lbs.

SpaPure Spa PH Decreaser is a powerful ph decreaser designed for the high temperatures of hot tubs. pH Decreaser is used to lower high pH levels as well as high Alkalinity levels. PH should be tested weekly and maintained at a level of 7.2 to 7.6.

Product Dosage

pH 7.7 to 8.0:

1/4 oz per 500 gallons of water.

pH 8.0 or above.

1/2 oz per 500 gallons of water.


  1. Test spa water frequently during the week and make necessary adjustments
  2. Turn on circulation system.
  3. If ph is between 7.7 and 8.0 apply 1/4 ounce(2 teaspoons) for every 500 gallons of water directly to the spa. If ph is greater than 8.0, apply 1/2 ounce (4 teaspoons) to every 500 gallons of water.
  4. Circulate for 15 to 30 minutes and retest ph.
  5. If ph is above 7.6, repeat steps 2-4 until ph is between 7.2-7.6

If you are adjusting the ph with some frequency, test total alkalinity and make necessary adjustments. Use of ProTeams Gentle Spa will help maintain a stable ph and buffers alkalinity.