Mineral Harmony Boost (Calcium Hardness Increaser)
Water hardness describes the total amount of calcium in spa water. Mineral Harmony BOOST brings water hardness into the proper range. Low hardness can result in corrosion of your spas equipment and spa surfaces. The ideal hardness level is 150- 400 parts per million (ppm). (16oz)
- Mineral Harmony BOOST increases water hardness.