Why should you use Spa Pure pH Up? Your spas pH needs to be in the range of 7.2 to 7.6. Low pH makes the water corrosive which is uncomfortable. Low pH will slowly eat away at the sensitive equipment in your spa. When pH is the ideal range everything in the spa works better and the water is most comfortable to spa users.
Benefits
Compatible with ALL forms of sanitization
Allows immediate use after treatment
Compatible with ALL forms of sanitization
Made in the USA

Applications
Apply to the spa while the water is circulating
If pH is below 7.2 then add 2-1/4 tsp for every 500 gallons of water
Wait 30 minutes and test. If pH remains low, then repeat treatment