Sadie's Pool Guide

The 15 Best Pool Shock Treatments

By Sadie Brooks

Pool Shock will quickly eliminate algae, bacteria, and other harmful contaminants from your pool water. Keep your pool water crystal clear by using pool shock weekly. It is an essential part of a regular pool maintenance routine. In our reviews, we took a look at the best pool shock for 2020.

Pool Shock

Top Picks For Best Pool Shock

Best Pool Shock Reviews

CLOROX Pool & Spa 33512 CLX Pool Shock XtraBlue 12 1-lb Bags On Amazon

Our 1 Pick Pool Shock

Overall Rating:Our Review Rating

This powerful pool shock formula kills bacteria without bleaching your pool's liner or affecting pH. Clear cloudy water, destroy microscopic contaminants, and fight algae with Shock XtraBlue. We like this pool shock because it improves filter performance and kills and prevents green, black, and mustard pool algae. The fast-dissolving formula works quickly so you can treat and swim in just 15 minutes. The multifunctional pool shock with algae-fighting crystals creates crystal clear water. We recommend using this pool shock weekly as part of a regular maintenance routine. Great choice!

  • Kills Bacteria
  • Swim Ready In 15 Minutes
  • Improves Filter Performance

In The Swim Chlorine Pool Shock - 12 X 1 Pound Bags On Amazon

Our 2 Pick Pool Shock

Overall Rating:Our Review Rating

This powerful chlorine shock treatment that is great for regular maintenance! It quickly eliminates algae, bacteria, and other harmful contaminants from your pool water. The main active ingredient in this pool shock is 68% calcium hypochlorite for quick sanitizing. Quickly kills algae and bacteria and removes micro-contaminants that make pool water cloudy. This easy to use swimming pool shock effectively treats 10,000 gallons of pool water per bag. Kills visible algae blooms and invisible bacteria that are dangerous to swimmers. Overall, this is one of our favorite pool shock treatments.

  • Twelve 1-lb Bags Of Shock
  • Great For Regular Maintenance
  • Quickly Eliminates Algae & Bacteria

HTH 52026 Super Shock Treatment For Swimming Pools On Amazon

Our 3 Pick Pool Shock

Overall Rating:Our Review Rating

We like this pool shock treatment because it increases the chlorine level in swimming pools to kill bacteria and algae. This pool shock is effective for all swimming pool types including pools with liners and gunite pools, and saltwater pool systems. One bag treats 13,500 gallons of pool water. You can keep your pool water clear and ready for fun all season long with this pool shock treatment. We also like that this pool shock won’t fade vinyl pool liners. Shock your pool weekly to keep free available chlorine levels between 1 and 4 ppm. You will love this pool shock because you will see results in 24 hours.

  • See Results In 24 Hours
  • Twelve 1-lb Bags Of Shock
  • Good For Swimming Pool Types

Doheny's Chlorine Super Shock Twenty Four 1-lb Bags On Amazon

Our 4 Pick Pool Shock

Overall Rating:Our Review Rating

Doheny's chlorine super pool shock is great for regular pool maintenance. It eliminates pool algae & bacteria. This powerful pool shock quickly eliminates algae, bacteria, and other harmful contaminants from your pool water. The main active ingredient in this pool shock is 68% calcium hypochlorite. Use Super Shock to kill visible algae blooms and invisible bacteria, which could cause illness to swimmers.

  • Twenty Four 1-lb Bags
  • Eliminates Pool Algae & Bacteria
  • Great For Regular Pool Maintenance

Pool Essentials Shock Treatment 6 Pack (13.4 oz Bags) On Amazon

Our 5 Pick Pool Shock

Overall Rating:Our Review Rating

Pool essentials shock treatment is fast dissolving and clears cloudy water fast! This awesome pool treatment reduces chlorine order and controls bacteria. This powerful pool shock was designed for easy, weekly pool shocking. Apply this product directly into the deep end of the pool. Shock your pool weekly and apply more shock after heavy use, high temperatures, or rain. Overall, this is a great option for most pools!

  • Clears Cloudy Water
  • Fast-Dissolving Pool Shock
  • Six 13.4 oz Bags Of Pool Shock

DryTec Calcium Hypochlorite Swimming Pools Shock Treatment On Amazon

Our 6 Pick Pool Shock

Overall Rating:Our Review Rating

DryTec calcium hypochlorite swimming pool shock is a fast-acting, quick-dissolving swimming pool sanitizer. It does a great job killing bacteria and controlling algae. The main active ingredient in this pool shock is 68% calcium hypochlorite. It is good practice to shock your pool every week to be sure that the water is sanitary. The recommended dosage for this pool shock is 1 pound per 10,000 gallons of water. An awesome choice!

  • 68% Calcium Hypochlorite
  • Kills Bacteria And Controls Algae
  • Quick-Dissolving And Fast-Acting

Clorox Pool & Spa XtraBlue Chlorinating Granules 6 Pounds On Amazon

Our 7 Pick Pool Shock

Overall Rating:Our Review Rating

Kill bacteria and stop green, mustard, and black pool algae with Clorox Pool XtraBlue chlorinating granules. This pool shock removes organic contaminants and reduces eye irritation. The dual action sanitizer & shock clean and clears water in one step. Application is easy just apply directly to your pool's skimmer. We like this pool shock because it improves filter performance and destroys contaminants to aid filtration and clear water.

  • Reduces Eye Irritation
  • Shock, Sanitizer, And Algaecide
  • Removes Organic Contaminants

Zappit 73% Calcium Hypochlorite Pool Super Shock 50-lbs On Amazon

Our 8 Pick Pool Shock

Overall Rating:Our Review Rating

Use Zappit 73 shock treatment in your swimming pool for more fresh and clear pool water. This powerful shock treatment is great for spring start-up, gives a quick chlorine boost, and helps to balance your pool water chemistry. One pound treats 16,500 gallons of pool water. Zappit 73 pool shock is 73% Calcium Hypochlorite. We like this granular pool shock formula because it comes in a bucket and saves you time and money.

  • 73% Calcium Hypochlorite
  • Pool Shock And Super Chlorinator
  • Fast Dissolving Granular Formula

In The Swim Sodium Chlorine Granular Pool Shock 40-lbs On Amazon

Our 9 Pick Pool Shock

Overall Rating:Our Review Rating

In the Swim's granular chlorine is ideal for use in swimming pools and spas. The powerful sanitizing powder destroys bacteria, breaks down contaminants, and kills algae. This pool shock is calcium-free and keeps hard-water pools sparkling clean and crystal clear! It is best to super chlorinate by shocking the pool every few weeks. We like this pool shock because it is great for spring pool openings. Overall, an awesome choice!

  • 40-lbs Of Pool Shock
  • Ideal For Use In Swimming Pools
  • Kills Algae And Destroys Bacteria

Kem-Tek 10-Pack Super Shock Quick 20 For Swimming Pools On Amazon

Our 10 Pick Pool Shock

Overall Rating:Our Review Rating

Super Shock Quick 20 is a patented, fast-acting shock formula that removes organic wastes. One bag treats 20,000 gallons of pool water. It controls algae and bacteria during super chlorination. Clarifies pool water and reduces other chemical needs to keep your pool clean and balanced. Produces clear, sparkling water in your pool when added on a weekly basis. We like this pool shock you can resume swimming in as soon as 15 minutes after application. Great choice!

  • Clarifies Pool Water
  • Kills Algae And Bacteria
  • One Bag Treats 20K Gallons

DryTec Swimming Pool Shock Treatment Twleve 1-Pound Bags On Amazon

Our 11 Pick Pool Shock

Overall Rating:Our Review Rating

Clarify your pool water with this awesome pool shock. When used as directed, Dry Tec extra pool shock removes organic waste and raises chlorine level, producing sparkling, clean swimming pool water. This pool shock also kills bacteria, controls algae, destroys organic contaminants, and restores crystal clarity. It contains 73% calcium hypochlorite. You will love this pool shock because it improves the appearance of your pool by removing and preventing algae growth.

  • Clarifies Pool Water
  • Prevents Algae Growth
  • 73% Calcium Hypochlorite Chlorine

In The Swim Super Pool Opening Chemical Start Up Kit On Amazon

Our 12 Pick Pool Shock

Overall Rating:Our Review Rating

The In The Swim pool opening chemical start-up kit contains an algaecide, chlorine shock, stain rust preventer, and water clarifier. This is an awesome pool start-up kit for most swimming pools! We like this kit because it has everything you need to get started. This pool shock is one of the most powerful shock treatments you can buy. It also kills the toughest algae and bacteria as well as other harmful water contaminants including green & yellow mustard algae.

  • Treats Up To 30,000 Gallons
  • Kills All Types Of Algae
  • Chlorine Shock And Clarifier

Clorox Pool & Spa Shock Plus Treatment 6 Pack Of 1 lb Bags On Amazon

Our 13 Pick Pool Shock

Overall Rating:Our Review Rating

Destroy microscopic contaminants with Clorox Pool & Spa Shock. This fast-dissolving pool shock kills bacteria and algae and improves filter performance. We like this pool shock because the fast-dissolving formula works quickly so you can treat and swim in just 15 minutes. You should use this pool shock as a weekly as part of a regular maintenance routine. Overall, this pool shock creates crystal clear water, improves filter performance, and won't impact your pH levels.

  • Kills Bacteria And Algae
  • Improves Filter Performance
  • Fast Dissolving Pool Shock

Clorox Pool & Spa XtraBlue 3-Inch Chlorinating Tablets 25 lbs On Amazon

Our 14 Pick Pool Shock

Overall Rating:Our Review Rating

These chlorinating tablets protect against algae and bacteria. It keeps water clean, clear, and free of visible algae. You will love these chlorinating tablets because they protect against sunlight and last longer. Application is easy, just apply the chlorinating tablets to your feeder, skimmer, or floater. We like this pool shock because it improves filter performance and destroys contaminants to aid filtration and clear water. Overall, a great choice for most swimming pools.

  • Protected Against Sunlight
  • Keeps Pool Clear Of Visible Algae
  • Kills Pool Algae And Bacteria

In The Swim Chlorine-Free Oxidizing Pool Shock 12 x 1 Pound Bags On Amazon

Our 15 Pick Pool Shock

Overall Rating:Our Review Rating

This awesome pool shock contains a powerful oxidizing agent that eliminates combined non-sanitizing chlorine and provides higher free chlorine levels. We like this pool shock because it eliminates algae growth, is chlorine-free, and you can swim in just 15 minutes after application. The main active ingredient in this pool shock is potassium monopersulfate. The recommended dosage of this pool shock is 1 pound per 10,000 gallons of water. This is one of our favorite pool shocks.

  • Eliminates Algae Growth
  • Chlorine-Free Pool Shock
  • Swim In Just 15 Minutes

Pool Shock Comparison

Recommended Swimming Pool Upgrades

Above Ground Pools

If you want to go swimming this summer without breaking the bank an above ground pool is an excellent choice! Above ground pools are easy to set up and you can be swimming in just a few hours.

Pool Algaecides

Using a pool algaecide will help keep your swimming pool sparkling clean all summer long! Having algae makes it harder for the chlorine to keep your pool clean. See our picks for best pool algaecides.

Robotic Pool Cleaners

Make cleaning your swimming pool convenient with a robotic pool cleaner! Why spend all summer trying to keep your pool clean when you can just let a robotic pool cleaner do the work.

Conclusion

Our # 1 recommendation for pool shock is the CLOROX Pool & Spa 33512 CLX Pool Shock XtraBlue 12 1-lb Bags. This powerful pool shock formula kills bacteria without bleaching your pool's liner or affecting pH. Clear cloudy water, destroy microscopic contaminants, and fight algae with Shock XtraBlue. We like this pool shock because it improves filter performance and kills and prevents green, black, and mustard pool algae. The fast-dissolving formula works quickly so you can treat and swim in just 15 minutes. The multifunctional pool shock with algae-fighting crystals creates crystal clear water. We recommend using this pool shock weekly as part of a regular maintenance routine. Great choice!

The next pool shock we recommend is the In The Swim Chlorine Pool Shock - 12 X 1 Pound Bags. This powerful chlorine shock treatment that is great for regular maintenance! It quickly eliminates algae, bacteria, and other harmful contaminants from your pool water. The main active ingredient in this pool shock is 68% calcium hypochlorite for quick sanitizing. Quickly kills algae and bacteria and removes micro-contaminants that make pool water cloudy. This easy to use swimming pool shock effectively treats 10,000 gallons of pool water per bag. Kills visible algae blooms and invisible bacteria that are dangerous to swimmers. Overall, this is one of our favorite pool shock treatments.

Our third pick is the HTH 52026 Super Shock Treatment For Swimming Pools. We like this calcium hypochlorite treatment because it increases the chlorine level in swimming pools to kill bacteria and algae. This pool shock is effective for all swimming pool types including pools with liners and gunite pools, and saltwater pool systems. One bag treats 13,500 gallons of pool water. You can keep your pool water clear and ready for fun all season long with this pool shock treatment. We also like that this pool shock won’t fade vinyl pool liners. Shock your pool weekly to keep free available chlorine levels between 1 and 4 ppm. You will love this pool shock treatment because you will see results in 24 hours.

Thank you for taking the time to read our Pool Shock reviews!