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HTH Plus Granule Cal-Shock 25 lb
HTH Plus Granule Cal-Shock 25 lb
HTH Plus Granule Cal-Shock 25 lb

HTH Plus Granule Cal-Shock 25 lb

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

HTH Plus Granule Cal-Shock 25 lb delivers rapid, effective pool sanitation with a calcium-hypochlorite shock formula designed for busy pool owners who want fast results without gue…

Hth MPN 88506
Sold Locally Only

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

Typical Store Price i
Typical store price: low $143.99, average $169.99
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About Product Overview

HTH Plus Granule Cal-Shock 25 lb delivers rapid, effective pool sanitation with a calcium-hypochlorite shock formula designed for busy pool owners who want fast results without guesswork.

Part of the trusted HTH Plus line, this 25-pound granule package provides a dependable, easy-to-use solution for restoring sparkling clarity after heavy usage, storms, or algae concerns. The granular Cal-Shock disperses quickly in pool water, delivering an immediate boost to available chlorine to oxidize contaminants and keep your pool inviting and safe.

  • Fast-acting granular formula: Boosts sanitizer levels quickly to recover from heavy swimmer load, debris, or weather events.
  • Calcium-based shock: Helps maintain calcium hardness balance while sanitizing, supporting stable water chemistry.
  • Easy application: Broadcast the granules as the circulation system runs for even distribution and effective dissolution.
  • Versatile use: Ideal for routine shocks and after water quality issues—clear results without guesswork.
  • Trusted brand: From HTH, a long-standing name in pool care, with a product clearly labeled as Cal-Shock under the Plus sub-brand.

Note: Always follow the label directions for dosage based on your pool size and current chlorine levels. After shocking, re-test water and adjust to bring sanitizer levels back to safe, comfortable swimming ranges.

The Details Specifications

Special Handling Special handling and shipping requirements apply.
Non-Returnable This product cannot be returned. All sales final.
Brand Hth
SKU 8136552
UPC 073187885067
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 13 × 13 × 11
Weight 28 lbs
Cubic Feet 1.08736 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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