Raises pH & Softens Water ClearRay® pH Up will increase the pH of spa or hot tub water. The total alkalinity of spa water should be maintained between 80 and 150 ppm as determined by a suitable test kit. Maintain the pH within the desired range of 7.2 to 7.8. Directions for Use: ClearRay® pH Up should be used as necessary when pH is below 7.2. NOTE: For best results, dissolve granular products first by adding to a small, plastic pail filled with water. Then, apply the solution to the spa water. 1. Determine amount of ClearRay® pH Up to use (pH 6.8-7.2. 1 oz; pH<6.8. 2oz) 2. Make sure equipment is OFF. 3. Add applicable amount of ClearRay® pH Up to the spa water. 4. Turn on circulation system for 1-3 hours. 5. Retest water after 3 hours. 6. If pH is still below 7.2, repeat steps 1-5.