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

HTH Plus Granule Cal-Shock 25 lb. capacity

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

HTH Plus Granule Cal-Shock 25 lb container is a fast-acting granular chlorine shock designed for residential pools. This calcium-hypochlorite (Cal-Shock) formula from HTH Plus deli…

Hth MPN 52057
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This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $118.99, average $139.99
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About Product Overview

HTH Plus Granule Cal-Shock 25 lb container is a fast-acting granular chlorine shock designed for residential pools. This calcium-hypochlorite (Cal-Shock) formula from HTH Plus delivers a reliable chlorine boost when your water needs it most, helping you quickly restore clear, sanitized water after heavy use, rain, or algae pressure.

  • Granular Cal-Shock formula: calcium-hypochlorite granules crafted to deliver a strong, rapid sanitizing dose for pool water.
  • 25-lb container: a large capacity that keeps your pool stocked for multiple shock treatments across the season.
  • Pool-focused use: specifically formulated for pool sanitation and shock treatments, compatible with standard test kits and routine maintenance.
  • Trusted brand: HTH Plus, a longtime name in pool chemistry, backing each shock with consistent results you can rely on.
  • Practical usage tips: follow label directions for dosing, distribute evenly around the pool, and avoid pouring undissolved granules directly into the water to protect surfaces and fixtures.

Ideal for pool owners seeking a straightforward, effective shock solution that quickly raises sanitizer levels and improves water clarity after heavy use, rain events, or cloudy conditions. This 25-lb cal-shock is a practical, ready-to-use option that integrates smoothly with regular testing and balancing routines to keep your pool inviting all season.

  • Test water before and after shocking to ensure chlorine and pH stay within recommended ranges.
  • Store in a cool, dry place; keep the container sealed to preserve potency.
  • Practice standard pool chemical safety and keep children and pets away from spill areas.

The Details Specifications

Special Handling Special handling and shipping requirements apply.
Non-Returnable This product cannot be returned. All sales final.
Brand Hth
SKU 8136562
UPC 073187520579
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 1 EA
Dimensions (L × W × H) 13 × 13 × 11
Weight 28 lbs
Cubic Feet 1.03431 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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