HTH HTH spa™ Care pH Down: Spa pH Decreaser

HTH spa™ pH Down helps you take control of your spa water with confidence.

• This powerful spa pH down formula lowers high pH levels to restore balance, clarity, and comfort to your hot tub.
• By optimizing water chemistry, it enhances sanitizer performance, prevents scale buildup, and reduces skin and eye irritation.
• Compatible with all spa types including bromine, chlorine, and biguanide systems.

HTH spa™ pH Down simplifies water care for a soothing, worry-free spa experiences every time. Hot Tub balancing made simple!

Contains mineral crystals

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

Compatible with all spas

HTH spa™ pH Down 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 decreaser to balance and maintain total pH levels between 7.2 and 7.8 ppm.

How to use HTH spa™ Care pH Down: Spa pH Decreaser

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 Down

If the pH level measures above 7.8 ppm, apply pH Down 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 Down if necessary.