If you are having trouble getting your spa water pH into the proper 7.2 – 7.6 range the likely issue is either hard water (a high concentration of calcium) or high Total Alkalinity (or both). Both of these are “pH buffers”. They simply make changing pH more difficult. This can be an advantage when your pH is in the proper range but a problem when you are first trying to get your pH into the 7.2- 7.6 range.
Note: Serum Total Maintenance is also a strong pH buffer. This is great advantage in maintaining the proper pH but it’s critical that you add Total Maintenance AFTER you adjust your pH to within the 7.2 – 7.6 range.
