Ensure your pH is in the proper range of 7.2 – 7.6. Add pH Down if too high and pH Up if too low. Note also that when you are adjusting pH, it takes your spa water 4 – 5 hours to completely adjust. Hence, once you add some pH Down or pH Up, do not test for pH again for 5 hours. If you don’t wait you are likely to blow right through the proper range and discover your pH is again out of whack on the other side of the scale the next day.
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