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HTH Plus Granule Cal-Shock 50 lb
HTH Plus Granule Cal-Shock 50 lb
HTH Plus Granule Cal-Shock 50 lb

HTH Plus Granule Cal-Shock 50 lb

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A bulk 50 lb tub of granular shock for pool owners who need to knock out algae and cloudy water without running out mid-season.
Hth MPN 52058
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Hth item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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Why isn't this online? The whole story →

About Product Overview

A 50-pound tub of calcium hypochlorite shock is what you reach for when the pool needs a real reset, not just a routine dose. HTH Cal-Shock Plus is a granular pool shock designed to knock out the buildup that regular chlorine additions can't touch - algae blooms, cloudy water, and the chloramines that cause that harsh chemical smell everyone blames on "too much chlorine" when it's actually too little.

This is a bulk container, sized for pool owners who shock regularly through the season or manage a larger pool that eats through chemicals fast. Granular form dissolves for straightforward broadcast application. Made in the USA.

  • Product Type: Cal-Shock, Sub Brand: Plus
  • Product Form: Granule
  • Container Size: 50 lb
  • Usage: Pool
  • Product Group: Shock
  • Country of Origin: 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.
Non-Returnable This product cannot be returned. All sales final.
Brand Hth
Model / MPN 52058
UPC 073187520586
Weight 54 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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