Brilliance for Spas pH Increaser Contains Mineral Salts and has a fresh scent, Directions for use: 1. Measure the pH of your spa water using Brilliance for spas test kit or test strips. 2. If your pH is below 7.2, add the recommended amount based on what your test results show. 3. Add Brilliance for spas pH Increaser to the filter skimmer with the spa circulation system running. 4. Run your hot tub for 30 minutes and re-check your pH levels. Add Brilliance for Spas pH Increaser if required.