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 773 reviews
(4.6)|
773 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
Price when purchased online
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Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $3.97
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Columbus, 43215
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HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination $3.97 29.8 ¢/oz

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Customer ratings & reviews

4.6 out of 5 stars
stars773 ratings298 reviews
How item rating is calculated
  1. 5 stars80% (618)
  2. 4 stars10% (79)
  3. 3 stars4% (33)
  4. 2 stars2% (14)
  5. 1 star4% (29)

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Showing 1-3 of 298 reviews

Jul 18, 2023
Ace
5 out of 5 stars review

Verified Purchase

Favorite product

I have had issues with shock not wanting to dissolve and stain my liner in the past. We have had 0 issues with this product. I will be sticking to this for years to come. We have a 10,000 gallon pool

Helpful?be91a470-d40b-11f0-ac61-41720b250fb9984533861
Jan 24, 2026
jack
Item details
Count: 6
Sold and shipped 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?be91a470-d40b-11f0-ac61-41720b250fb9984533861
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?be91a470-d40b-11f0-ac61-41720b250fb9984533861