HTH spa™ Care Alkalinity Up

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Easily raise the total alkalinity levels in your spa water to ensure it remains clear, clean and healthy.

  • Keeps total alkalinity and pH levels in range
  • Protects against skin & eye irritation
  • Protects against skin & eye irritation
  • Protects spa equipment & surfaces
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Creates more comfortable water

Keeps the pH levels in range, which helps protect against skin and eye irritation.

Prolongs the life of your spa

Helps prevent damage to spa surfaces and equipment (pumps, filters and heaters).

Compatible with all sanitizers

HTH spa™ Alkalinity Up works great with bromine, chlorine and biguanide systems.

You’re all clear with HTH®

For best results, use HTH spa™ Test Strips twice a week to test, balance and maintain total alkalinity levels between 80 and 120 ppm.

How to use

HTH spa™ Care Alkalinity Up

1. Test Your Spa Water

Use HTH spa™ Test Strips.

Use HTH spa™ Test Strips.

2. Apply HTH spa™ Alkalinity Up

If the total alkalinity level measures below 80 ppm, apply directly to your spa water. Refer to on-pack instructions for the correct dosage. Allow water to circulate for 1-3 hours.

If the total alkalinity level measures below 80 ppm, apply directly to your spa water. Refer to on-pack instructions for the correct dosage. Allow water to circulate for 1-3 hours.

3. Test & Repeat As Needed

Total alkalinity should be maintained between 80 and 120 ppm.

Total alkalinity should be maintained between 80 and 120 ppm.