Spa Sentry™ is the easiest way to control pH for clear, stable water. pH is the most critical factor because it changing rapidly when bathers, products or other elements enter the water.
- Controls pH for up to two full months.
- Introduces a buffering compound, making pH easier to keep in balance.
*Please note: Spa Sentry should never be used in spas with plaster finishes or grouting that contains calcium.