Best Pool Shock of 2021

Last Updated: June 6, 2021

If you have got been a pool proprietor for fairly a while, it ought to come as no shock (pun meant) to you that there are a lot of totally different pool shock choices to select from. Even in case you are somebody that doesn’t prefer to shock your pool typically, there’ll come a time when you have to a shock.

Instead of losing your time researching the totally different producers and elements contained within the shock, you may learn our evaluations. We offers you an unbiased opinion as to the perfect pool shock accessible in 2020. Some of our decisions will probably be budget-friendly, and others will probably be a extra premium shock.

Regardless of what you’re searching for, it is possible for you to to discover a appropriate answer right here.

Comparison of our Favorites in 2021:

The 5 Best Pool Shocks:

1. In The Swim Chlorine Pool Shock — Best Overall

In The Swim Chlorine Pool Shock (24 bags)


Our high decide for the perfect general pool shock is the In The Swim Chlorine Pool Shock. The pack comes with twenty-four luggage of chlorine shock. Each equipment (1 Pound) is succesful of treating 10,000 gallons of water. Make certain you understand the precise pool dimension earlier than placing shock in.

If you have got a concrete pool, you may pour this bag out whereas strolling across the periphery of the pool. If you have got a vinyl or fiberglass pool, it’s best to dissolve the shock in a five-gallon bucket after which disperse that water/chlorine combine into the pool. This will assist to verify the shock answer is just not too concentrated in a single space, inflicting discoloration.

This product is 65% calcium hypochlorite, so it’s fairly helpful at dealing with dangerous micro organism and an algae outburst. As highly effective as this product is, it additionally works fairly effectively for normal upkeep as it’s not an excellent shock. If you’re searching for a simple to make use of easy shock product, this can be a nice choice provided at an inexpensive worth.


  • Effective at killing dangerous micro organism
  • Can clear up an algae outbreak
  • 65% calcium hypochlorite
  • Comes with 24 luggage of product


  • Can typically take a while to dissolve

2. Clorox Pool&Spa Shock Plus — Best Value

Clorox Pool&Spa Shock Plus 6 Pack (1 lb Bags)


Clorox places out a whole line of pool upkeep merchandise. Customers comfy with the Clorox model title are likely to benefit from the simplicity of the Clorox merchandise. Most of them are very user-friendly, and so they work to make pool upkeep really feel much like toilet or kitchen cleansing.  The Clorox Pool&Spa Shock Plus 6 Pack is a superb worth for a pool shock.

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This pool shock will prevent some cash whereas making the pool shock job fairly easy. The Clorox Pool&Spa Shock is not going to increase your pH and might have you ever again swimming within the pool in as little as fifteen minutes. The shock is available in a simple to open bottle that may be poured immediately into any sort of pool. According to Clorox, it’s best to not pre-dissolve this shock.

Each bottle of Clorox Pool&Spa Shock treats 12,000 gallons of water. If your pool is a bit of bigger, this product will get you a bit additional than the In The Swim one-pound luggage of shock. After dispersing this product within the deep finish space of your pool, enable your filter to run for a number of hours.


  • Kills dangerous micro organism
  • Clears cloudy water
  • Won’t influence pH
  • Swim fifteen minutes after therapy


  • Not bought in bulk
  • Easy pour bottles are simpler than the luggage

3. Doheny’s Super Pool Shock

Doheny's Chlorine Super Shock


If you’re searching for a product that doesn’t fiddle, the Doheny’s Super Pool Shock often is the selection for you. This is an excellent shock therapy that includes 68% calcium hypochlorite. The Doheny’s Super Pool Shock is out there in twenty-four one-pound luggage, and some different choices. If you have got a industrial pool that that you must shock, they will even promote this product in bulk.

Although this chlorine is a little more potent than another decisions, it’s nonetheless secure for normal upkeep. Like all shock remedies, Doheny’s Super Pool Shock is great at eliminating algae, micro organism, and different dangerous contaminants.

The therapy instructions for this chlorine say to make use of one pound per each 10,000 gallons of water.

This is a good worth tremendous shock that may get you thru a pool season with out an algae outbreak. The solely challenge that now we have come throughout with the Doheny’s Super Pool Shock is that it could typically take a while for the shock to dissolve.


  • Fair Price
  • Can be bought in bulk
  • Safe for weekly upkeep


  • Can take a while to dissolve
  • Has been identified to be much less efficient than different opponents

4. Aqua-Chem Pool Shocks

Aqua-Chem Pool Shocks (10 Pack)


If you had been ready for the premium pool shock choice, you have got discovered it. The Aqua Chem Pool Shocks is a dearer product, and a few will argue that it’s greater than price it. Like all pool shocks, the Aqua-Chem is sweet at killing micro organism and algae.  This specific product has a bit of an algaecide in it as effectively. Even after the shock is completed, there will probably be some algaecide left in your pool.

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This product can be utilized in all pool varieties, and it does a superb job of getting the water wanting blue but in addition very clear. The Aqua Chem is not going to improve the pH in your pool. If cash is just not an issue for you and also you need a pool shock that’s assured to do its job, this can be a excellent choice for you.


  • Will not alter the pH
  • Contains some algaecide
  • Works with all pool varieties
  • Swim in fifteen minutes

5. Ultima Total Control Pool Shock

Ultima 24726 Total Control Blended Shock


In our evaluation of the Aqua-Chem Pool Shock, we defined that there’s a small quantity of algaecide within the product. With the Ultima Total Control Pool Shock, you’re getting a shock and an algaecide multi functional. This generally is a good thing in case you are searching for a product like this, or when you have some points with algae in your pool.

Not solely will the Ultima Total Control Pool Shock assist to scrub up an algae outbreak, however it additionally works to stop each inexperienced and black algae even after the preliminary therapy. This is a granular product bought in a three-pound easy-to-use container. Since this isn’t purely pool shock, you’ll have to use multiple pound per 10,000 gallons that almost all different firms promote. To deal with a 20,000-gallon pool with the Ultima Total Control Pool Shock, you have to one three-pound bottle.

The pricing on this product is a bit increased than some of the others we reviewed. That worth distinction, mixed with the truth that you want fairly a bit greater than different manufacturers to finish the job this product could have you spending more cash. If, nevertheless, you’re fighting an algae outbreak, this can be price the additional cash.


  • Algaecide and pool shock multi functional
  • Easy to make use of granular product in a bottle
  • Works to stop algae after the shock


  • Expensive
  • Need extra product to cowl the identical space

Buyer’s Guide

Choosing the suitable shock to your pool is just not rocket science, however there are some things you’ll want to contemplate. Sometimes once you see a cut price worth on some pool shock it may be tempting to load up, right here are some things to look out for to be sure you are getting the perfect bang to your buck.

Calcium Hypochlorite

A shock is simply nearly as good because the sum of its elements. Most pool chlorine and shock ought to comprise about 65% calcium hypochlorite. If you occur to discover a product that calls itself pool shock with a a lot decrease focus, you might need to rethink.

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Pool Shock with Algaecide

If you have got an algae outbreak and also you wish to clear it up, selecting a pool shock with algaecide could make sense. When simply doing all of your weekly pool upkeep, you don’t essentially want that algaecide. Keeping up with shock remedies to your pool is an important half of common upkeep. Find an excellent shock that won’t change pH and use it typically. Chances are you gained’t see an algae outbreak if that is carried out accurately.

Liquid vs. Granular

Most pool shock will are available a granular form or a tab. When it involves vinyl and fiberglass swimming pools, folks get involved about shock staining the edges. Most instances, it’s best to dissolve the shock in a five-gallon bucket earlier than pouring it immediately into the pool. There are additionally pool chemical dispensers that you should utilize to just remember to get even distribution all through your pool.

How Much Will I Need?

A basic rule of thumb when buying pool shock is that you’ll want one pound of shock for each 10,000 gallons of water in your pool. Keep in thoughts in case you are coping with a major algae outbreak or simply had a big swim load, you might must double or triple shock your pool. When researching shock and the pricing concerned, be sure that to grasp that one bag is not going to all the time be sufficient to your pool.

Best Pool Shock 2020

How Do I Shock A Pool?

Always observe the suggestions on the actual shock that you just buy. Some will ask you to dissolve the shock earlier than placing it within the pool, and others will say to throw the shock proper in. Some pool shocks will promote that it’s secure to swim after only a few minutes. This is nice in an emergency like a celebration or gathering, however largely you have to be stunning your pool at night time when everyone seems to be out.

Shocking the pool at night time provides it time to work earlier than the solar can burn all of it off. Keep your pool filter operating for 8-24 hours after a shock. If you will be paying for these chemical compounds, you might as effectively use them correctly and get essentially the most out of them.


Choosing which pool shock to make use of is just not a troublesome determination. Most choices are an identical however come in numerous packaging. When you discover a good shock that works to your pool, go forward and replenish. Shock is less expensive when bought in bulk. To correctly care to your pool in a 12 months, you’ll undergo lots of pool shock.

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