Balance the pH levels in your spa water using our spa pH increaser for beautiful clarity, improved sanitizer efficiency and a more relaxing experience.

• Our pH increaser increases pH levels in spas and hot tubs for healthy and clear spa water
• Allows sanitizer to work more effectively
•  prevents corrosion of spa surfaces and equipment

Contains mineral crystals

HTH spa™ pH Up is formulated to provide a more relaxing spa experience.

Compatible with all spas

HTH spa™ pH Up is great for all spas, including bromine, chlorine and biguanide.

You’re all clear with HTH™

For best results, use HTH spa™ Test Strips twice a week to test, and use our spa pH increaser to balance and maintain total pH levels between 7.2 and 7.8 ppm.

How to use

HTH spa™ Care pH Up: Spa pH Increaser

Test Your Spa Water

Use HTH spa™ Test Strips to test your spa water twice weekly. pH levels should be maintained between 7.2 and 7.8 ppm.

Apply HTH spa™ pH Up

If the pH level measures below 7.2 ppm, apply pH Up directly to the filter skimmer with the spa circulation system running. Refer to the on-pack chart for correct dosage.

Re-check pH Levels

After the spa circulation system has been running for 30 minutes, re-test pH and add more pH Up if necessary.