10 Best Pool Shock Reviews of 2021 List You Only Need


Maintaining your pool clean and safe to use is quite important. Employing the ideal pool shock is the perfect method to take care of bacteria, algae, and other contaminants from your swimming pool water.

So, that’s the best pool shock to purchase? Do not worry, I’m here to help! Following a thorough evaluation, I have discovered the listing of best pool shocks to your own reference. You may find all the helpful info in this article before picking your very best one.

List of 10 Best Pool Shock Reviews

1. In The Swim Chlorine Pool Shock

The In The Swim Pool Shock comprises over two-thirds of calcium hypochlorite, and 24 1 pound bags are being marketed together. The cost is at just a few dollars per pound with this strong and beneficial shock therapy. A single bag can be used for every 10,000 gallons of water weekly.

In The Swim Pool Shock gives a fast increase of chlorine if you require it. This is a superb product to start the swim off with and also to boost chlorine levels fast. Be certain you combine this item in a bucket of water to split it before pouring it from water.


  • 24 one-pound bags for an affordable price
  • Strong and efficient pool shock
  • Over two-thirds Calcium Hypochlorite


  • Wait for 2 hours following use before swimming
  • Thick granules are difficult to dissolve

2. Clorox Pool&Spa 81006CLX Saltwater Chlorine-Free Shock

Your salt pool may contain more contaminants than other varieties of the pool. With this chlorine-free formulation, Clorox 81006CLX Saltwater will remove all contaminants, creating your pool clean and glistening.

Not just natural contaminants, but this pool shock also has the capability to clean all kinds of algae and contaminants, making your water not muddy anymore.


  • Does not raise the chlorine level
  • Perfect for saltwater pools
  • Remains pH level
  • Removes contaminants


  • May not be utilized for spa

3. Leisure Time CB Calcium Booster Balancer for Spas and Hot Tubs

Leisure Time Spa Shock Renew is an excellent product created for use in hot tubs. Hot bath contaminants will develop with time and can be easily removed by frequently shocking the water indoors. It may safely be used with both chlorine and bromine purification methods.

The active ingredient in this product is potassium peroxymonosulfate, a broadly used oxidizing agent

This item is extremely simple to use. If you are using this as a shock oxidizer, Leisure Time indicates adding two ounces of the product for every 250 gallons of water into your pool. It’s necessary to be aware that this item isn’t a disinfectant and you’ll still use your naturopathic therapy so as to take care of your water.


  • Easy to use
  • Preventing the water stabilized
  • Minimizes the need for other substances
  • Cheap
  • Powerful


  • Some complaints relating to this product using a weak formulation

4. Clorox Pool&Spa 33512CLX Pool Shock XtraBlue (12 1-lb Bags), 12 Pack, White

Nearly everybody knows the title Clorox, or at least, should know the title. They are a company that is dedicated themselves to creating a number of the very best disinfecting products now offered. Along with the shock they market, Clorox Pool & Spa XtraBlue Shock is among the very best products around that someone could utilize to shock their pool.

This item is a 6-in-1 shock that is intended to kill germs, kill algae, and explain water. Additionally, it is intended to help improve the filter’s functionality too. And since this product dissolves fast, the swimming pool is prepared in 15-minutes so swimmers can come back to the pool as fast as possible. One more thing we enjoyed about this item is that each box includes 12 1-pound totes, so there is lots of merchandise to maintain the pool in great shape all year.


  • It prevents and kills algae fast.
  • The swimming pool is swim-ready at 15-minutes.
  • It is a 6-in-1 formulation.


  • Maybe not as suitable as the bottles variant

5. Clorox Pool&Spa Shock XtraBlue 12 Pack 

This is only one of the most effective pool shocks on the shelves now and features a lot of extras. Rather than being put in a tote, the shock comes in an easy-to-start and pour jar that is a lot easier to use than a handbag.

Another quality of this item is that the crystals kill all of the blue algae in your pool and they also happen to ruin mustard algae, fish, black algae, and green algae. What’s more, the shock can help to thwart the increase of the above-mentioned algae on your own facility. These 12 lbs of products make your swimming pool look thinner and safe to swim in. Plus it works without ruining your pool lining, which makes it the best pool shocks for vinyl liners.


  • Swim-ready at 15 minutes
  • Fast-dissolve
  • The best pool shock for algae
  • Sold in an easy to pour bottle instead of a tote


  • Leaves residue onto your filter

6. Aqua Chem 5-Pack Shock Xtra Blue for Swimming Pools

Aqua Chem Shock Xtra Blue for Swimming Pools sells a five-pack of one-pound bags for an extremely low cost. This shock will kill both bacteria and algae in the pool. Aqua Chem Shock Xtra Blue helps to make sparkling water. It may be utilized in almost any pool kind. The product reduces the odor of chlorine and reduces aggravation caused by the eyes. Aqua Chem Shock won’t raise the pH level of your pool.

This shock permits you to return to the pool quicker than other selections out there. You find yourself with sparkling water that’s pH balanced and is prepared to swim in as few as 15 minutes after you include it.


  • The best pool shock for kill algae and germs
  • Reduce the odor of chlorine and irritation in the eyes
  • Creates clean, sparkling water
  • Fits any pool kinds


  • Make sure that you are buying new bags that aren’t expired or about to expire

7. In The Swim Calcium Hypochlorite Chlorine Granular Pool Shock – 50 Pounds

Your swimming pool is all the bacteria, algae, contamination, as well as creatures? And you are locating a pool shock merchandise to fix this issue, you have to pick In The Swim Cal-Chlor Pool Shock.

This shock therapy can clean the most polluted water, and this is actually excellent for your own pool opening. It’s made with a non-stabilized formula, so thus, you do not need to fret about bleaching your vinyl liners if using them daily. So, it is one of the best shocks for vinyl pools


  • Perfect for pool openings
  • Ideal for routine maintenance
  • Quick Cleanup
  • Longevity


  • Cannot place this at a feeder

8. HTH 52026 Super Shock Treatment Swimming Pool Chlorine Cleaner

Another product which we believed did an excellent job of shocking a swimming pool would be that this product from HTH- Super Shock. It does a fantastic job of returning to its regular baseline cleanliness amounts. This item is made to be added into a pool each week to maintain the pool in great shape. However, the customer should always remember they must use this product together with frequent testing to make confident they don’t overtreat the pool.

As this item is a 4-in-1 item, it is effective at killing germs and algae fast and economically. And yes, it is effective at treating some of those more demanding kinds of algae such as mustard, black and green varieties. 1 bag is sufficient to take care of up a pool to 13,500 gallons in size, so a box of 12 ought to maintain an individual’s pool clean and nice nearly all year.


  • This item is very good for vinyl-lined pools.
  • It is a 4-in-1 formula that works nicely.


  • This item could have been better packed.

9. DryTec 1-1901 Calcium Hypochlorite Chlorinating Shock Treatment for Swimming Pools

The DryTec shock is fostered with 68 percent of calcium hypochlorite for rapid and effective activity. It creates a large number of active and accessible chlorine, effectively removing algae, bacteria, and organic contamination.

This quick-dissolving sanitizer ought to be used whenever there isn’t any direct sunshine reaching your swimming pool, which means that you may find the best outcomes. 1 bag ought to be added to every 10,000 gallons of water to find a fantastic impact and purify the water almost instantly.


  • Quite efficient against germs and organic contaminants
  • Strong against algae (in high concentrations)
  • Quick-dissolving granules for quicker results


  • It may be a bit more expensive than other products

10. Zappit 73% Cal Hypo Pool Shock – Calcium Hypochlorite Super Shock 50lb

Zappit 73 percent Cal Hypo Pool Shock comes packaged in a bucket and also in granular form to make sure you obtain a simple time when adding into your pool. Each bucket weighs 50 lbs, which is sufficient to operate for a month or two and ensure your pool stays sanitized.

The product boasts of 70% available chlorine, which means you may be sure of obtaining a shocking pool every single time you use it. In fact, this really is really a super chlorinator and pool shock, all in 1 packet. Quick Cleanup granular comes inconveniently as you’re able to use your pool instantly you jolt it. And one pound of the item is adequate to be used in a 40K toaster pool. Consequently, it’s economical and simple to use shock.


  • A powerful chlorine increase
  • Quickly-dissolving Alternative
  • High capability to balance the pool


  • Quite Tough to open

How To Choose the Best Pool Shocks


A good deal of goods are geared towards tangible pools whilst additional pool shocks are good for vinyl overground pools. Whatever pool you’ve got, it’s ideal to inspect the shock you’re purchasing is proper.

Pool Size

The dimensions of your swimming pool will determine how much pool shock you’re going to want. Usually, you’ll require 1lb of a shock for every 10,000 gallons for every time of shock. But with some more powerful pool shocking therapy, you might require a little quantity of shock while its impact stays the same.

Calcium Hypochlorite

You’ll see that most pool shock products comprise around 65 percent calcium hypochlorite. Among the very best and important components, should you discover a product which has a lower level, it would be sensible to think about another.

Potassium peroxymonosulfate

If you’re trying to find a shock treatment with no contamination, then you need to get one that includes potassium peroxymonosulfate. It operates by oxidizing the water and killing off bacteria and other contaminants. A huge benefit is that one is not influenced by sunlight, so it is the best pool shock to include during any period of the day.

Additionally, it works quickly so that you may keep on swimming quite quickly (usually in one hour). It’s one drawback though — it does not kill algae off (since it includes no contamination ). As a consequence, that you would have to get an algaecide individually, and blend it with the shock to receive the greatest possible protection for the swimming pool.

Free of Additives 

Some pool shock products have added compounds to remove algae, contamination, and other things.

Keep away from such versions since they may contain salt, cyanuric acid, and other substances from the center.


Now you can pick the best pool shock on your swimming pool and also eliminate pool algae, bacteria, and other contaminants.

Any of those products we’ve reviewed previously will do a terrific job on your pool.

About Natasha Balami

My name is Natasha Balami, and I used to function as the electronic home editor in ELLE Decor. Right now, I'm working for Montana's Trail House on a mission to review great items for the Patio & Garden.

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