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HTH Chlorine Shock — Granules, 13.3 oz — Pool Shock Treatment for Weekly Chlorination
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.
Generated by AI
Specs
- Chemical standard typeCalcium Hypochlorite Shock
- FormGranules
- Weight13.3 oz
- Pack quantity18
Current price is USD$11.99
Price when purchased online
- Free shipping
Free 30-day returns
How do you want your item?
Columbus, 43215
Arrives by Wed, Feb 25
|
Sold and shipped by Pool Stuff Express
4.515679442508711 stars out of 5, based on 287 seller reviews(4.5)287 seller reviews
Free 30-day returns
Other sellers
$10.96
+Free shippingShipping, arrives by Thu, Feb 26 to Columbus, 43215
Sold and shipped by Four Seasons Pool SupplyPro Seller
Free 30-day returns
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About this item
Product details
HTH Pool Care Shock, Boosts Chlorine Levels, Cal Hypo Formula, 13.3 oz
HTH Shock is the original swimming pool shock designed to boost chlorine levels and kill bacteria and algae for a clean, clear pool. Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause over-stabilization or chlorine lock and cloud your water. The fast-acting, fast-dissolving Cal Hypo based formula in HTH Shock provides chlorination without adding extra CYA for a beautiful sparkle all season. This pool chemical shock is great for all pool types and won't fade your pool liner.
How To Use HTH Shock Follow the on-pack instructions according to your pool size to add HTH Shock directly to swimming pool water or skimmer. For best results, apply HTH Shock as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.
- Intense weekly chlorine boost
- Increases chlorine levels quickly
- Prevents bacteria & algae
- Use weekly to solve 90% of pool water problems within 24 hours
- Fast-acting and fast-dissolving
- Granules shock
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Warranty
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Showing 1-3 of 299 reviews
Jan 24, 2026
jack
Item details
Sold byIntegriMarketSize: 13.3 oz
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
