HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination
HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination
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HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination

4.6 stars out of 778 reviews
(4.6)|
778 ratings
HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly ChlorinationHTH Pool Care Shock for Swimming Pools Granules 13 3 ozHTH 80783 13 3 oz Granule Shock Pack of 18
Size:13.3 oz

Key item features

  • Intense Boost: Provides an intense weekly chlorine boost to quickly increase chlorine levels in pool water.
  • Problem Solver: Designed to solve 90% of common pool water problems within 24 hours when used weekly.
  • Algae Prevention: Effectively prevents the growth of bacteria and algae, contributing to a clean and clear pool.
  • Fast Action: Features a fast-acting and fast-dissolving granular formula for rapid results.
  • CYA-Free Formula: Utilizes a Cal Hypo based formula that provides chlorination without adding extra cyanuric acid (CYA), preventing over-stabilization.
  • Liner Safe: Suitable for all pool types and will not cause fading of pool liners.
  • Weekly Maintenance: Recommended for use as part of a weekly pool care routine to maintain free available chlorine levels between 1 and 4 ppm.
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Current price is $3.9729.8 ¢/oz
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Columbus, 43215
Arrives by Sat, Feb 28
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4.6 out of 5 stars
stars778 ratings299 reviews
How item rating is calculated
  1. 5 stars80% (621)
  2. 4 stars10% (80)
  3. 3 stars4% (33)
  4. 2 stars2% (14)
  5. 1 star4% (30)

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Showing 1-3 of 299 reviews

Jan 24, 2026
jack
Item details
Size: 13.3 oz
Sold byIntegriMarket
5 out of 5 stars review

Verified Purchase

Pricey

Seems to work well, may be a lil weak. Sometimes takes 2 bags instead of one. And always priced to high

Helpful?d2c00a30-0b0c-11f1-8e30-63e7131886fb984533861
Nov 25, 2025
Fran
Item details
Size: 13.3 oz
5 out of 5 stars review

Verified Purchase

HTH Pool Care Chlorine Shock — Granules, 6 Pack

These are very easy to use with an inground pool and dissolve fast. The pool's water is clear in no time.

Helpful?d2c00a30-0b0c-11f1-8e30-63e7131886fb984533861
Nov 25, 2025
smith
Top Reviewer
Item details
Size: 13.3 oz
5 out of 5 stars review

Verified Purchase

Chlorine

We love how quickly it dissolves, and how fast shipping was. I will order it again.

Helpful?d2c00a30-0b0c-11f1-8e30-63e7131886fb984533861