As Needed: 1. Determine amount to use according to bottle label. 2.Turn all equipment OFF. 3. Add applicable amount 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.
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.