Leisure Time Spa Up is a fast-dissolving granular product that gently adjusts water pH and alkalinity upward. Compatible with chlorine, bromine and biguanide sanitizers. Use as part of the Simple Spa Care Program. It is important to maintain the water's pH between 7.2-7.8. Low pH below 7.2) can cause corrosion and excessive sanitizer useage Compatible with chlorine, bromine and biguanide sanitizers. Applications: As Needed: 1) Make sure all equipment is OFF. 2) Add 1/4-ounce (1-1/2 tsp.) to the spa water. 3) Turn on circulation system for 30 minutes. 4) Retest water. If pH is still below 7.2 repeat steps 1-3. Tips: 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.