Rendezvous Spa Specialties Alkalinity Up

SKU: 106693A
Inventory status: 27 in Stock

Size: 1 lb


Rendezvous Alkalinity Up granular additive raises spa water alkalinity and helps maintain pH levels. Sanitizers work most efficiently when pH is kept in proper range. Therefore a properly balanced spa will require less sanitizer and less maintenance. Keeping your spa balanced is an important step in getting the most out of and preserving the life of pool and spa equipment. This product is compatible with chlorine, bromine, ozone, and biguanide sanitizers.


2 1/4 tbsp per 500 gallons of water to raise alkalinity by 10 ppm.


  1. Determine the level of total alkalinity by the use of a suitable test kit.
  2. If the value is below 75 ppm, add sufficient Rendezvous Alkalinity Up directly into the water - to increase the total alkalinity value to at least 75 ppm.
  3. 2-1/4 Tbs. Rendezvous Alkalinity Up will provide approximately 10 ppm increase in total alkalinity for 500 gallons of water.
  4. Wait Several hours for Rendezvous Alkalinity Up to distribute uniformly before rechecking total alkalinity level.
  5. Repeat as needed.


Sodium Bicarbonate: 95%, Other Ingredients: 5%