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Rendezvous Spa Specialties Spa Increase is a liquid formula specially designed to adjust pH and alkalinity levels. It gently raises both pH and total alkalinity. 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, biguanide, and mineral purification systems.
Add 1 oz at a time until desired level is reached.
- Rendezvous Spa Increase is used to raise the pH and total alkalinity of spa water.
- pH and total alkalinity should be tested and compared together.
- When the pH value of the water drops below 7.2 as determined by the use of a pH test kit, turn on the air blower or filter system and add 1 oz. of Spa Increaser to spa water.
- Wait 60 minutes and retest.
- Repeat this procedure until pH is in the proper range of 7.2 to 7.8 and total alkalinity is in the range of 80 ppm to 120 ppm.