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HTH Plus Granule Cal-Shock 1 lb
HTH Plus Granule Cal-Shock 1 lb
HTH Plus Granule Cal-Shock 1 lb
HTH Plus Granule Cal-Shock 1 lb
HTH Plus Granule Cal-Shock 1 lb
HTH Plus Granule Cal-Shock 1 lb

HTH Plus Granule Cal-Shock 1 lb

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A granular calcium hypochlorite shock that helps knock out contaminants and get pool water back to swim-ready.
Hth MPN 52063 In Stock & Ready to Ship
$139.99
Free shipping on orders over $149
Ships within 24 hours · most orders arrive in about 2 business days
Ships free on orders over $149 $14.99 flat shipping until your order reaches $149.

About Product Overview

HTH Cal-Shock Plus is a granular calcium hypochlorite shock treatment made for routine pool maintenance and quick recovery after heavy swimmer use, storms, or algae blooms. The granule form dissolves into pool water to help restore proper sanitizer levels, giving you a straightforward way to keep water clear and swim-ready. It's built into HTH's Plus line of shock products, formulated for pool owners who want a reliable, no-fuss option for their regular chemical routine.

  • Product type: Cal-Shock (calcium hypochlorite)
  • Product form: Granule
  • Sub-brand: HTH Plus
  • Container size: 1 lb
  • Usage: Swimming pool water treatment
  • Made in the USA

The Details Specifications

Ships Ground Travels by ground for safe handling — common for items with a lithium battery, aerosol, or liquid inside. Nothing extra to do on your end; it simply ships by truck instead of by air.
Brand Hth
Model / MPN 52063
UPC 073187520630
Weight 28 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

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01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

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03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

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The big boxes don't care if your hardware store survives.

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Authorized dealer · Hth

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