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Best pool chlorine tablets 2018 – [Buyer’s Guide]

Last Updated September 1, 2020

Charlie OliverHey, I’m Charlie Oliver. After putting in 55+ hours of research and testing, I made a list of the best pool chlorine tablets of 2018 and explained their differences and advantages.

I have been writing about technology and entertainment since the early 90s from my secluded home in West Virginia. In this section we provide our readers with a comparison table of our top picks. Scroll past the table for a closer look at each of the 3 best pool chlorine tablets in our review section.

Best pool chlorine tablets of 2018

After carefully examining the reviews and ratings of the people who have used them earlier this listicle has been made. Following is the list of top three pool chlorine tablets of 2018.

There are dozens of choices for an pool chlorine tablets these days. These are composed of modern styling with modern technology to match it. Here are some good examples. Customers need to be careful on how they spend their money on these products.

Test Results and Ratings

Rank №1 №2 №3
Total 4.8 4.5 4.3
5 points
4 points
4 points
5 points
5 points
4 points
5 points
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4 points
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4 points
5 points
Awards 1
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How to save up to 86%? Here is little trick.

You must visit the page of sales. Here is the link. If you don’t care about which brand is better, then you can choose the pool chlorine tablets by the price and buy from the one who will offer the greatest discount.



№1 – Swim Best 50 lbs Bucket 3″ Swimming Pool Stabilized Chlorine Tablets

Swim Best 50 lbs Bucket 3

Swim Best commercial grade, 3 inch chlorinating tablets are the highest quality available
3 Inch, 8 Ounce tablets, individually wrapped
Concentrated 99% Trichloro-S-Triazinetrione with 90% available stabilized chlorine
For such a price and the level of quality it can’t even have any cons, only pick holes.

Why did this pool chlorine tablets win the first place?

The product is very strong. Its material is stable and doesn’t crack. I don’t know anything about other models from this brand, but I am fully satisfied with this product. I really enjoy the design. It is compact, comfortable and reliable. And it looks amazing! I was completely satisfied with the price. Its counterparts in this price range are way worse.
















№2 – In The Swim 3 Inch Pool Chlorine Tablets 25 lbs.

In The Swim 3 Inch Pool Chlorine Tablets 25 lbs.

Powerful 90% available stabilized chlorine
99% Trichloro-S-Triazinetrione
The slowest-dissolving, longest lasting chlorine you can buy
A bit pricier.
Lack of durability.

Why did this pool chlorine tablets come in second place?

The material is pretty strong and easy to wash if needed. The design quality is top notch and the color is nice. I recommend you to consider buying this model, it definitely worth its money. I really liked it. It is amazing in every aspect. It did even exceed my expectations for a bit, considering the affordable price.
















№3 – Clorox Pool&Spa Xtra Blue 3-Inch Long Lasting Chlorinating Tablets

Clorox Pool&Spa Xtra Blue 3-Inch Long Lasting Chlorinating Tablets

Protects against algae and bacteria for water that stays clean, clear and free of visible algae
Kills all types of pool algae and kills bacteria
Protected against sunlight to last longer
Longevity is in question.
Not the best for professionals.

Why did this pool chlorine tablets take third place?

A very convenient model. It is affordable and made of high-quality materials. It is inconvenient to use due to the size. I am going to get something different next time. It doesn’t squeaks nor bents. Looks great in my apartment. I liked the design. We’ve been using it for 2 months and it still looks like brand new.
















pool chlorine tablets Buyer’s Guide

If you keep the before points in mind, you can easily go out to the market and buy pool chlorine tablets, right? No!

Triple Action Tabs


The second type of chlorine to discuss is for shock treatment and/or algae removal. These types of chlorine will sanitize the water and destroy bacteria, break down contaminants and help prevent algae growth. They also break apart chloramine bonds, which give the water a strong chlorine odor.

Assure Multi Shock

This is made up of 58% sodium dicholoro-s-triazinetrione, aka Dichlor.

Why use it? This product does not affect pH levels or cause cloudiness.

Assure dissolves almost instantly and you can swim as soon as 1minutes after use.

Assure Multi Shock works as a disinfectant, controls algae growth, contains a clarifier, and enhances water quality.


Cal-Chlor is 68% available chlorine and 35% calcium. This product is the same as our In the Swim pool shock, but in a bucket.

When choosing a chlorine product to use, determine what is best for you.  Keep in mind where the pool is located as well as the need to keep your chlorine levels between 1-ppm. Maintaining this proper level will ensure that you have a clean and safe pool to swim in.


So we’re going to need some kind of way to test our water.We need an easy way to look at levels of chlorine / bromine, pH, and total alkalinity. And ideally we want just one kit that is going to test all these main water characteristics at once.


If we add chlorine to perfectly pure and clean water in our hot tub, it simply disperses to become what is called free chlorine. As the water becomes contaminated by use, the free chlorine attaches to the contaminants and becomes combined chlorine (or chloramines).

It’s chloramines that produce the chlorine odour that many people find unpleasant. When we complain of too much chlorine, it is normally the chloramines causing the powerful chlorine smell.

One of the downsides when adding chlorine to your hot tub is that it does have a short effective life in hot water. So requires constant monitoring, adjusting and adding. The upside is that it is cheap.


Bromine and chlorine are very closely related in what they are able to achieve for us in our hot tub.

But bromine acts a little differently than chlorine. It is much more stable in hot water, and so is able to maintain it’s residual content in the hot water better. When the bromine content has finished its effective sanitising cycle it remains dormant in the tub. By adding a non-chlorine shock treatment the bromine springs back into life and start sanitising your tub again.

Bromine is generally more expensive than chlorine, but requires less attention and less quantity to keep the tub pristine. It also does not have the unpleasant chlorine odour.

Using chlorine to treat swimming pools has been the choice pool owners for decades. Chlorine is available in 3 different forms; tablets, granular and liquid. The preferred method for treating residential pools is a chlorine floater or chlorine feeder using the tablet form. One thing to remember, you usually get what you pay for when you buy cheap chlorine.

Why Chemical Floaters Are Not So Good

The first option can be set aside. If you have a liner made from vinyl, the floater can get trapped on the wall and spill out chlorine in just one area. This can bleach the liner. Also, floaters are not very efficient. Water does not pass through properly and the chlorine will not be distributed evenly.

Be aware of the downsides if you opt for a chemical floater. We mention them because they often crop up on lists of delivery systems but you should take note of the drawbacks.

You can take a look here

The chlorine tablets are fundamental to proper pool maintenance.

Any list of chlorine tablet reviews features these great 3-inch tablets from In The Swim.

Although at first glance they may not appear cheap, stop to put the cost in relation to buying the swimming pool. You need to keep things shipshape and the cost of proper chlorine tablets pales into insignificance against the price of a new pool.

With 99% Trichloro-S-Triazinetrione and 90% available chlorine, these tablets allow your chlorine to dissolve very slowly to ensure it lasts the distance. This slow-release method is ideal.

You get around 11tablets in this jumbo 50-pound tub. When you work out the cost per application, it’s not so bad after all. They are separately wrapped to keep the smell contained and to prevent moisture spoiling them.

These tablets work equally well with skimmers, floaters or automatic feeders so they make a versatile pool maintenance solution.

If you want long-lasting pool hygiene thanks to an industry heavyweight, check out these 3-inch chlorine tablets from In The Swim. They deliver in fine style.


We hope you’ve found these reviews useful. You can buy in complete confidence if you opt for any of the tablets outlined above.

Please drop us a line any time if you have any queries or feedback. We’ll respond promptly. We are always striving to provide as much useful information on all aspects of gardening. If there’s anything you’d like us to cover here, just let us know.

Ozone pool purification 

Ozone purification is the most effective FDA-approved water purification method. Also known as O3, or “triatomic oxygen,” ozone is a powerful oxidant that destroys microorganisms, halts accumulation of deposits in pipes and water systems, and requires virtually no harsh chemicals.

How ozone generators maintain pool water

Ozone water purification accounts for more than 90% of the world’s purified water. It’s popular for a reason: A naturally occurring substance, ozone immediately reverts back to regular oxygen after use, without leaving anything toxic behind.

This purification process requires an ozone generator using either UV bulb or a corona discharge system. A regular molecule of oxygen contains two atoms of oxygen; ozone is created when a third is added.

Produced ozone is passed into a diffuser, which creates bubbles and saturates them with ozone. These ozone-saturated bubbles are then mixed with pool water in a tank. There, ozone breaks down pathogens, resulting in healthy, swim-ready water.

How UV light systems maintain pool water: 

Instead of chemicals, UV light uses a physical process to disrupt the DNA of dangerous pathogens, rendering them harmless. The sanitation takes place in an enclosed chamber inside the pool equipment, where water passes through and is sanitized by powerful rays of UV light. The treated water then circulates out into the pool, creating a fresh, healthy swimming environment.

Chemical burns and ulcerations

Who’s in charge of your pool’s maintenance and adding chemicals? If it’s a family member, they face added risks. You may be directly exposed to chlorine when adding it to your pool by tablet, liquid, or powder—a form called calcium hypochlorite.

When calcium hypochlorite comes into contact with skin, it’s highly corrosive, and its oxidizing nature can cause significant tissue damage! Depending on the length of contact with the chemical, you or a family member could end up with painful chemical burns or skin ulcerations.

Rashes or burns from chlorine gas

If you have an indoor pool or an enclosed spa with poor air circulation, take special caution. Chlorine byproducts can off-gas—floating up out from the water and hovering above the pool surface. With poor ventilation, this gas can build up.

If it does, and your skin comes into contact with the chlorine gas, you can develop hives, rashes, or blisters. A high amount of these toxic vapors can even cause skin cells to die because they struggle to regenerate due to the chlorine’s corrosive properties. Burns may also occur from prolonged exposure to chlorine gas.

Cut chlorine impact on your skin

Don’t add fuel to the fire: Treat sensitized skin with extra care. If your skin is recovering from a sunburn, if it’s particularly dry or flaky, or if you have a chronic condition that’s flaring up, avoid swimming in chlorinated water.

Get some Vitamin C: To neutralize chlorine and chloramines clinging to your body after a dip in the pool, use Vitamin C directly on your skin (and hair). Make a spray mix of pure water and a form of the supplement such as rosehips, Ascorbic Acid, or Sodium Ascorbate. Some versions include apple cider vinegar in the mix as well. Check here to learn how.

Remove chlorine residue: Once you exit the pool, immediately take a shower. Make sure you use soap to help wash off chlorine and other chemicals that might still be clinging to your skin or swimsuit.

Trap in moisture: After you rinse, use a rich moisturizer on your body to help prevent skin from drying out and becoming irritated. Use a separate product specially formulated for your face.

Maintain balance: Be sure to regularly monitor and adjust your swimming pool chemical levels—especially the pH, free chlorine, calcium hardness, and total alkalinity.

When pool chemistry is out of whack, there are repercussions. The water may have an unnecessary oversupply of chlorine. It may require the addition of more harsh chemicals to bring it into balance. Or, the water can end up with high acid or alkaline levels that amp up irritating effects on the skin.

Remember your scalp and hair: Don’t forget about protecting the skin on your head, as well as your hair. See our post on how to protect your hair from chlorine exposure.

Get a pool boy: Reduce chances for direct exposure to chlorine in its pure, concentrated form. Hire a pool service, and let someone else handle the routine of buying, storing, and handling calcium hypochlorite—chlorine in liquid, powder, or tablet form.

Another precaution: Avoid chloramine-laden pools. If you’re near the water, and you catch a whiff of a bleach-like odor, it’s likely from those menacing chlorine byproducts. Do your skin a favor: stay out of the water.

Saltwater Pools

With a saltwater system, chloramines can still form—especially when many swimmers use the pool. A saltwater pool may not be the perfect solution; however, compared to a conventionally chlorinated pool, the even, continual dispersion of the produced chlorine gives rise to fewer chloramines overall. The result is reduced worries over bothersome chloramines stirring up unwanted dermatological issues.

UV Sanitizer

An even better alternative is an ultraviolet pool sanitizer. Germicidal light is used in an array of applications, from pasteurizing food to sterilizing medical equipment. In a pool, UV allows you to slash the amount of needed chlorine.

UV rays disinfect water and destroy algae, bacteria, and viruses. The light even wipes out chlorine-resistant microbes like Giardia, Cylcospora, and Cryptosporidium (“Crypto”). Water gets treated inside a chamber in the pool equipment and swimmers are never exposed to the rays.

The Takeaway

Everyone wants to keep their skin in good condition. Now that you better understand the woes chlorine can pose, you can take precautions. If you have no choice but to swim in a traditionally chlorinated pool, use the methods described here to help limit potential harm.

Whether you turn to a saltwater sanitizer, ozone generator, or ultraviolet light, your whole family will benefit. Everyone will enjoy pristine water, a more comfortable swimming environment, and healthier skin.

Shock Dosing FAQs

These big tablets are designed for much larger swimming pools. Return them & exchange for Stabilised Chlorine Granules or small 20g Chlorine Tablets dosed with a floating dispenser OR Spa Chemical Starter Kit.

Despite popular belief, spa salt systems DO have chlorine. They actually create their own chlorine naturally, without binders or additives. This pure chlorine, is hailed as gentler on the skin and clothing. Because it’s generated organically, you don’t need to spend money on chlorine tablets or bromine. Keep in mind, you still need to balance and shock your hot tub with an oxidizer to keep water clean, so you will spend some money on chemicals.

Softer Water

Perhaps one of the best features of a salt water hot tub is the way the water feels — soft and smooth. The salt used is sodium chloride, the same salt as the ocean, but lesser quantities. This slightly salty water leaves your skin soft and refreshed.

Converting from chlorine to salt

Once you have made the decision that you want to convert from a traditional chlorine pool to a salt pool then your first decision will be which salt system to choose. A few considerations you will want to take into account when selecting your salt system are listed below.

Adding the salt

At start up it is best to shock your pool from an outside source like a standard granular pool shock. Then, wait until the chlorine level has returned to between to PPM before turning on the salt system. Now it’s time to kick on your salt system. We suggest setting the system to 50% chlorine production and let the system run for 2hours. After 2hours test your pool water with a good test strip to see if your free chlorine is between 1-PPM. If your chlorine is too high or too low, dial your chlorine product up or down in 10% increments and retest your chlorine in 2hours. Repeat this process until the proper chlorine level is reached. The nice thing is that once the salt system is dialed in it is pretty much a set-it-and-forget system, because it is always there producing natural chlorine for your pool at the desired amount to keep your pool crystal clear. Salt systems also have a superchlorinate feature which shocks your pool. So if you ever run into demanding water conditions then this feature comes in handy to shock your pool and get your pool water looking clear again.

Prolonging the life of your salt cell

Salt cells normally last 3-years. To get longer life out of your cell, you will want to follow certain steps.

As your salt cell is in use, calcium deposits will build up on the blades of your salt cell. To remove this calcium build up, soak your cell in diluted acid solution. To prolong the life of your cell, you will want to clean it at least once a season. On the flip side you want to make sure you do not clean your cell too often or with too highly concentrated acid solution as this can strip the cell of its titanium coating making it useless.

Calcium build-up

Salt pools tend to make the pH in your pool want to rise so it is important that you are monitoring your pH levels and adding muriatic acid to reduce the pH. High pH levels cause much quicker calcium build up on your salt cell as well as on your pool tiles. I learned this the hard way! If you want to get fancy, many pool owners are coupling their salt systems with an acid feed pump. This is nice as the production of chlorine in your pool is automatically produced by the salt chlorine generator and the pH levels are automated by the feed of acid from the acid pump.

Texture Design

One day exercise. Nixon branded concept headphonesThe headphones rear plate magnetically connects to the band eliminating a need for a mechanical hinge system. Question was how much can we take away from the design and in theory still have it function.

Health Issues

The lower chlorine concentration of a saltwater pool will be gentler on a swimmer’s skin. This is a particular benefit to swimmers with allergies, but anyone will enjoy smoother skin when swimming in the pool. The lower level in a saltwater pool also reduces swimsuit fading. Chlorine in a traditional pool is higher in concentration and can cause the skin to itch, burn, and become dry.


tablets or sticks added regularly. Both pools will need the chlorine level checked on a regular basis to keep the chlorine level within the correct zone for having a clean, clear pool. The difference is that a saltwater pool’s chlorine is adjusted at the generator control box and by adding more salt to the water. By contrast, the chlorine system must be adjusted by the amount of chlorine physically added to the pool.

The chlorine pool will also need periodic “shocks” of more concentrated chlorine to ward off algae and maintain consistent chlorine levels. This involves dissolving chlorine in a bucket of water and adding it slowly to the pool. A saltwater pool needs this shock treatment less often, usually only after an especially heavy rain or when algae begin to bloom, making the pool turn green.

One difficulty with a saltwater pool is when a problem arises. The solution may be more complex than that of a traditional chlorine system and may require a pool professional to solve it. Homeowners can solve most chlorine pool issues using home testing kits and the right combination of chemicals.

An added maintenance necessity for the saltwater pool is checking the saltwater generator cells. They should be removed, inspected, and cleaned at least once a season.

Swimming Pool Features

One concern about saltwater systems is the effect the salt water has on the pool parts, such as the lighting, liner, and masonry work. This is especially true with a conversion of an existing chlorine system to a saltwater system because the original pool features may not have been designed to work well with salt water. For example, a concrete pool will likely need to be resurfaced sooner than if it remained a traditional chlorine pool. However, when installing a system in a new pool, the features can be chosen that will better withstand exposure to salt water. Fiberglass, as an example, is not affected by salt water and can be used as a saltwater pool surface.

Landscaping around the pool can be damaged by exposure to salt water. Due to the adverse effects on soil nutrients and plants, some communities ban these systems. Check local ordinances before installing a saltwater system. Traditional chlorine pools, however, do not have these issues with landscaping and soil.





How to save up to 86%? Here is little trick.

You must visit the page of sales. Here is the link. If you don’t care about which brand is better, then you can choose the pool chlorine tablets by the price and buy from the one who will offer the greatest discount.



Final Word

First of all thanks for reading my article to the end! I hope you find my reviews listed here useful and that it allows you to make a proper comparison of what is best to fit your needs and budget. Don’t be afraid to try more than one product if your first pick doesn’t do the trick.

Most important, have fun and choose your pool chlorine tablets wisely! Good luck!

So, TOP3 of pool chlorine tablets



Questions? Leave a comment below!

Chatting about pool chlorine tablets is my passion! Leave me a question in the comments, I answer each and every one and would love to get to know you better!

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