Locks in proper pH level from refill to refill even in hard water areas.

• Fast dissolving granular formula
• Locks in pH until next refill

Tips:
If your water conditions are extreme or spa usage is very heavy, use Spa Up or Spa Down first to bring the pH range to 7.0-8.0, then follow the directions on the bottle. pH Balance Plus will then lock in pH levels.

Compatible with:
Chlorine, bromine and biguanide sanitizers.