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HTH® Pool Care Shock Ultra

HTH Pools

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Use this all-in-one powerhouse to quickly and easily increase chlorine levels, prevent bacteria, algae, stain and scale, reduce skin and eye irritation, improve filtration and soften your swimming pool water.

  • All-in-1 weekly Cal Hypo pool shock
  • Use weekly to solve 90% of pool water problems
  • Restores crystal clarity in 24 hours

How to use

HTH® Shock Advanced


1. Add Directly To Water Or Skimmer

Follow the on-pack instructions according to your swimming pool size.


2. Repeat Weekly

For best results, use HTH® Shock Advanced as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.