Dohenys 68% Cal-Hypo Pool Shock, fast-dissolving granular chlorine, 6 x 1 lb bags
Doheny's 68% Cal-Hypo Pool Shock, Fast-Dissolving Granular Chlorine, 6 x 1 lb Bags
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Doheny's 68% Cal-Hypo Pool Shock, Fast-Dissolving Granular Chlorine, 6 x 1 lb Bags

Doheny's 68% Cal-Hypo Pool Shock, Fast-Dissolving Granular Chlorine, 6 x 1 lb BagsDoheny s Super Pool Shock 68 Cal Hypo Granular ChlorineDoheny s Super Pool Shock 68 Cal Hypo Granular ChlorineDoheny s Super Pool Shock 1lb Bags 24 Count
Size:6 x 1 lb Bags (6 lb Total)

Key item features

  • Fast-Acting Pool Shock: Instantly boosts chlorine levels to eliminate algae and contaminants, keeping your pool crystal clear.
  • Pro-Grade Cal Hypo Shock: Made with 68% calcium hypochlorite and 65% available chlorine for powerful, long-lasting pool maintenance.
  • Convenient and Easy to Use: Pre-Measured 1 lb Bags for Quick, No-Mess Application
  • Effective Dosage: Use 1lb per 10,000 gallons; for spring openings or heavy algae blooms, apply 2-3 doses for best results.
  • Trusted Quality, Family-Owned: With over 50 years of pool supply expertise, Doheny’s provides high-quality products you can count on.
Current price is $39.99
Price when purchased online
  • Free shipping

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Sold and shipped by Dohenys PoolSuppliesSuperstorePro Seller
4.4512448132780085 stars out of 5, based on 964 seller reviews(4.5)
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Customer ratings & reviews

4.7 out of 5 stars
stars1,538 ratings1,521 reviews
How item rating is calculated
  1. 5 stars86% (1,317)
  2. 4 stars9% (137)
  3. 3 stars2% (32)
  4. 2 stars1% (10)
  5. 1 star3% (42)
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Showing 1-3 of 1,521 reviews

Jun 9, 2026
Jeff
5 out of 5 stars review

Seller Verified Purchase

Good old Doheny's

Another season underway using Doheny quality pool chemicals. I use their shock and 3 inch chlorine tabs and pH Up and the pool is ready for swimming within 7 days of opening and shocking. During the season, never a problem. And their prices are so much lower than any pool supply store on Long Island. With Doheny ( and my old Dolphin robot) maintaining my pool is a breeze.

Review from Doheny's
Helpful?5ISCQI3FAQFC561719512
Apr 4, 2026
jb
5 out of 5 stars review

Seller Verified Purchase

I would and have bought this product every year

This has been the only shock I have used for at least 15-20 years. We live in the woods and every year the pool is filthy no matter what. Within less than a week shocking the pool we see the bottom and by weeks end everything is great

Review from Doheny's
Helpful?5ISCQI3FAQFC561719512
Apr 5, 2026
Pool
5 out of 5 stars review

Seller Verified Purchase

Works well

The products work as expected. Will have to use them a little longer to understand how well any future use. The beginning of the swimming season won't begin until next month, so there is more time the products have to be used.

Review from Doheny's
Helpful?5ISCQI3FAQFC561719512