HTH™ makes Pool and Spa care easy.
Our balancers, sanitizers, shocks, and algaecides are designed with DIY pool owners like you in mind.
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Spa Sanitizers
Test description
Have you tested your pool water lately?
Twice weekly water testing is fast and easy with HTH™ Test to Swim™ app, now with more accurate results.
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Solve Chlorine
lock for goodShop HTH™ ShockOnly HTH™ fast-dissolving shock with Cal Hypo clarifies and rids water of contaminants without using any CYA (cyanuric acid). That means it won't overstabilize or cause chlorine lock—ever.
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The most trusted
name in spa careLearn MoreFor generations, HTH™ has been leading the way in smart spa care. We do the chemistry so you can just take it easy. Relax with confidence—you're in an HTH spa™.
