Best chlorine tablets

The purpose of pool chlorine tablets is to help sanitize the water of your swimming pool and hot tub so that you and your family can enjoy it safely.

In the following sections, you will find information about how pool chlorine tablets work, what to look for in the best chlorine tablets, and what to expect when buying one.

Top Chlorine Tablets for Your Pool

HTH 42043 Super 3″ Chlorinating Tablets Swimming Pool Chlorine

HTH 42043 Super Chlorinating Tablets Swimming Pool Chlorine

One of the best chlorine tablets is HTH 42033 Super 3-inch chlorinating tablets. It has a 4-in-1 formula that will keep your pool water sanitized and clear of bacteria. Designed with built-in anti-algae protection and clarifiers, they make it easy to care for your pool yourself.

Their other properties include killing microorganisms and offering protection against the sun to prevent chlorine loss. They also dissolve slowly (last up to one week). You can keep your pool clean and safe by applying pool chlorine tablets (one tab for every 10,000 gallons of water) to your skimmer basket, floating chlorine dispenser, or feeders.

  • The effect is long-lasting.
  • Dissolve slow.
  • Algal protection built-in.
  • For use with feeders, floaters, and skimmers
  • Broken pieces or powdered can sometimes be found

CLOROX Pool&Spa Long Lasting Chlorine Tablet

CLOROX PoolSpa XtraBlue 3 Inch Long Lasting Chlorinating Tablets 5 Pound Chlorine

The next pick in the ranking of the best chlorine tablets is a multi-functional pool chlorinating tablet that effectively kills harmful bacteria and unsighted algae. In addition to offering a long-lasting effect, these chlorinating tablets also have a UV-stabilizing feature.

Since chlorine pool tablets dissolve slowly, they provide long-lasting sanitation and protection for your pool.

In addition to conditioners, Clorox chlorine pool tablets contain agents that prevent corrosion and scale build-up on surfaces, and make your pool water feel smooth. With their standard 3-inch size, these skimmers can also be used in floaters and feeders.

Four different weights are available for this product: 5 pounds, 12 pounds, 25 pounds, and 35 pounds.

  • Lasts for a long time and dissolves slowly.
  • Enhanced UV protection.
  • Surfaces are not corroded or stained.
  • Feeders, floaters, and skimmers are suitable for use.
  • Broken pieces or powdered can sometimes be found

In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools

In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing Swimming Pools

To ensure your swimming pool is safe and healthy for use, add chlorine tablets In the Swim. They offer 3-inch stabilized chlorine tablets. Such best pool chlorine tablets are typically thicker than those sold at other pool supply stores. Because they’re thicker, they dissolve slower and keep your pool water sanitized longer.

Stabilized tablets are the ideal size for your automatic feeders and floaters because of their 3-inch standard size. With these chlorine tablets, your pool will stay sanitary for a long time because 90% stabilized chlorine provides long-lasting sanitizing power. It consists of 99% Trichlor. This means your pool will not only be clean but also stabilized.

  • Effective for a long time.
  • Comes in individual packages.
  • Protects your chlorine from UV rays.
  • Sometimes the chlorine washers are broken into pieces.

Rx Clear 3-Inch Individually Wrapped Chlorine Tablets

Rx Clear 3 Inch Individually Wrapped Chlorine Tablets

Among the best chlorine tablets is Rx Clear 3 inch tablets since they not only offer long-term protection for your pools but are also the best for hot tubs.

Swimming pools can be cleaned effectively with these 7-ounce tablets containing 90% available chlorine and 99% trichlor, which are slow to dissolve so the granules of chlorine can be circulated easily throughout the pool. These tablets are designed to dissolve at a slow rate because they are resistant to sunlight.

This product offers extra protection as each tablet is individually wrapped. As a result, the RX tablets are gentle to the skin, and they contain cyanuric acid to ensure durability. This treatment is also an algaecide, bactericide, and disinfectant.

The available weight of these chlorine tablets ranges from 8 to 1,200 pounds. Choose which one is right for you!

  • Easy to use.
  • Protection against sunlight.
  • Low price.
  • Dissolve slowly.
  • low concentration of chlorine.
  • Sometimes tablets are broken.

Clorox Pool&Spa Small Chlorine Pool Tablets 

Clorox PoolSpa Small Pool 1 Chlorinating Tablets

Swimming pools containing 5000 gallons or less of water are intended to use chlorine tablets by Clorox. Floaters can be used with these tablets because they aren’t designed for use with skimmers.

Although it is UV resistant, it is capable of preventing algae and microbiological growth in your pool water. Chlorine tablets have a medium absorption rate and are a value for money product.

The containers are airtight but not individually wrapped. You should wear gloves and a mask when handling these tablets. Some of them may crumble.

A chlorine tab with a size of 1 inch makes a great choice for an inflatable pool, an Intex pool, for a small pool, for an above ground pool, or for a fountain. There are conditioners in all of the tablets that make the water silky smooth. Additionally, the tablets protect against corrosion, scales, and stains, which makes them ideal for vinyl pools.

  • Ideal for small pools.
  • Kills algae and bacteria efficiently.
  • Protection against sunlight.
  • Easily crumbled tablets.
  • Doesn’t work with skimmers.
  • No individual packs.

Doheny’s 3 Inch Swimming Pool Chlorine Tablets

Dohenys 3 Inch Swimming Pool Chlorine Tablets

Chlorine tablets by Doheny’s Pool Care are another preferred choice for pool owners with large pools. The tablets are in a handy openable bucket and individually wrapped to reduce the chlorine odor from outgassing.

Contains trichlor, which helps protect chlorine from UV rays. The chlorine tablets are also made by means of a strong compression process. Thanks to this technology they take a very long time to dissolve. This ensures long and reliable protection of the pool.

Available in 50 lb. and 100 lb. buckets. Most chlorinators and floaters can use these tablets.

  • Highly concentrated.
  • Stabilized against UV rays.
  • Tablets are individually wrapped.
  • Easily crumbled tablets

Pool Mate 1-1407 Jumbo Tabs Swimming Pool Chlorine

Pool Mate 1 1407 Jumbo Tabs Swimming Pool Chlorine

To kill bacteria and germs off in your pool, the Pool Mate 3-inch chlorine tablets acts as a sanitizer. The Pool Mate 3-Inch Chlorine Jumbo Tabs come individually wrapped to make handling them more convenient.

handling to avoid contact with liquid chlorine and as stabilized chlorine tablets, the tablets are protected leading to a slow dissolving and long-lasting effect. Adding these tablets directly to the pool or mixing them with any other chemicals is not recommended.

The model contains about 94% trichloro-s-triazinetrione and 85% available chlorine. This ensures a longer-lasting, slower dissolving chlorine residual in your pool since each tab is stabilized against harmful UV rays. The tablets weigh eight ounces and are designed for use as floaters or in-line feeders only.

It is recommended to use 1-3 tablets per 10,000 gallons of water once a week for optimal performance. Before adding chlorine tablets to the water, test its pH, calcium hardness, and alkalinity.

  • It can be handled safely and easily.
  • Long-lasting sun protection.
  • Multiple functions.
  • Tablets can be damaged.
  • Sometimes comes in packages
  • Overpriced

Pool Care 36150 Swimming Pool Chemical 3-Inch Chlorine Tablets

Pool Care 36150 Swimming Pool Chemical 3 Inch Chlorine Tablets

The 36150 chlorine tabs from Pool Care are designed to disinfect and sanitize the pool. They are an algaecide and a bacteriacide.

The chlorine is stored in a 50-pound bucket of individually wrapped, stocked tablets for the entire season. You can skip daily maintenance by selecting a tablet designed to work for multiple days.

Pool Care 36150 model contains about 94% Trichloro-S-Triazinetrione and 89% available chlorine, designed for optimum pool cleaning and protect your chlorine from UV

  • Big size bucket
  • Kill bacteria and algae
  • Tablets are individually wrapped
  • Chlorinating tablets are breakage
  • Price

What is a Chlorine Tablet?

Chlorine tablets, also known as chlorine tabs, are dense tablets containing chlorine that are used to treat still water in a swimming pool to prevent bacteria and algae growth.

What Types of Chlorine Tablets are there?

Getting your pool sanitized and safe requires knowing what types of chlorine tablets are available and which will suit your needs. The most common types include:

Stabilized Chlorine Tablets

These stabilized chlorine tabs is most suitable for use in outdoor swimming pools since it lasts for a long time. Stabilizers slow down the dissolution rate of chlorine in the presence of sunlight.

Outdoor pools’ use of these products is due to their presence of CYA, which protects chlorine in the swimming pool water against the UV rays of the sun. In addition to saving time, stabilized tabs maximize chlorine and reduce costs.

Unstabilized Chlorine Tablets

As they cannot last as long as stabilized chlorine tablets, these tablets are best used in indoor swimming pools. Cyanuric acid is absent, so UV rays and the sun do not protect them, which causes them to burn faster. In general, unstabilized chlorine consists of lithium hypochlorite, sodium hypochlorite, and calcium hypochlorite.

Calcium hypochlorite, or cal-hypo, is the most commonly used chlorine for pools because it is safe and easy to use. It is also very effective, containing about 65% chlorine tablets for the swimming pool.

The unstabilized chlorine tabs often contain lithium hypochlorite or sodium hypochlorite. They are without stabilizers and dissolve faster in the swimming pool water.

Indoor pools requiring regular treatment to keep them clean and free of contaminants are ideal for unstabilized tablets. These tablets will provide results quickly.

How does chlorine work?

The key to using chlorine is to understand how it works. The best sanitizer is good ol’ inexpensive chlorine, but no one of the other tools does the job as well as it. Bacteria, viruses, and algae are all killed by the best chlorine!

When chlorine comes into contact with microorganisms and bacteria, it produces a chemical reaction. This chemical breaks down into several different substances, including hypochlorous acid (HOCI), which destroys the cells that produce unwanted pests.

The process is known as oxidation, so some pool owners add more oxidizers to their water when they use chemicals that don’t work well. If the chemistry of the pool is balanced, the chlorine will do its job.

In other words, for chlorine to properly protect you, all pool chemicals’ water parameters must be within the normal range, including pH, alkalinity, cyanuric acid, calcium hardness, and chlorine.

  • pH: 7.4 – 7.6
  • Chlorine: 1.0 – 3.0 ppm
  • Total alkalinity: 80 – 140 ppm
  • Calcium hardness: 200 – 400
  • Cyanuric acid: 25 – 50 ppm

How to add Chlorine Tablets to Your Pool?

When you choose the best chlorine tablets, it’s time to do the next step. Add chlorine tablet for your pool. There are a few steps involved in adding chlorine to a pool. To add chlorine, follow these steps:

Automatic chlorine dispensers

The automatic pool chlorinator is a chlorine feeder that offers convenience and the highest level of efficiency when it comes to distributing chlorine. When pool owners want to dispense chlorine tablets that have the right chemical balance, the chlorinator is an excellent choice.

To avoid over-chlorination of your swimming pool, you can use this method to control the process. The automatic chlorinator should be filled with chlorine tablets and the level should be set between 1 and 3 parts per million. Check the chlorine levels with test strips to make sure they are appropriate for your pool use, pool water quality, and weather.

Floating Chlorine Dispensers

During the dissolved time, the chlorine tablets for swimming pools inside floating dispensers sanitize your pool while protecting it. Despite its ease of use and low maintenance, this method is often unsuitable for pools with liners.

It is possible for the chlorine tablets to get stuck in an area of the pool, causing too much chlorine to be dispensed in a concentrated area damaging your pool liner. Additionally, chlorine tablet is distributed unevenly if the swimming pool water circulation is not adequate.


Alternatively, you can directly add the tablets to the pool skimmer. During the running of the filter, water passes through the skimmer basket, dissolving the tablets. A return jet then pushes the chlorinated pool water evenly into your pool.

Nevertheless, the disadvantage of this method is that even when the filter isn’t running, the tabs keep dissolving. Unattended, the pool water will be highly chlorinated and corrosive.

How many chlorine tablets per week? 

It is actually quite straightforward to determine how many chlorine tablets to add to your pool.

3″ and 2″ tablets are applied once per week for 5,000 gallons. An example would be to administer two tablets each week to a 10,000-gallon pool.

Take for instance a pool that holds 8,000 or 12,000 gallons. Just round it up.

8,000 gallons = 2 tablets per week.

12.000 gallons pool = 3 tablets per week.

You should definitely check with the manufacturer of the tablets you choose for your swimming pool.


Are chlorine pool tablets any good?

In some cases, one chlorine pool tablet can sanitize up to 10 thousand gallons of pool water. Chlorine pool tablets are the most effective and cost-effective way to sanitize swimming pools. Their effectiveness is accompanied by the fact that the best chlorine tabs are cheap, time-saving, and easy to use.
In addition, they are very versatile to use. Chlorine pads are good for small pools, saltwater pools, indoor pools, hot tubs, and many other types of pools.

Can you swim in a pool with chlorine tablets?

Due to slow dissolving tablets in water, most chlorine tablets last a long time. Swimming with the chlorine tabs is okay, but it’s a good idea to test and make sure that you’re that your swimming pool clean and safe.

Should I put chlorine in my inflatable pool?

Since small inflatable pools do not require chlorination to keep clean, there is no need to add it to them. In these types of pools, it’s easier to drain the water and get fresh water for swimming than to spend money on chlorine tabs. However, pools that are larger can benefit from chlorine.

Which are the best pool chlorine tablets?

It’s really difficult to choose one or two of the chlorine tablets for your pool mentioned above because they are all top products. To date, the best chlorinating tablets are HTH 42033 super 3-inch chlorinating tablets due to the fact that they are available on the market and have a 4-in-1 formula.

Is it better to use chlorine tablets or chlorine granules?

Yes, tablets are better because chlorine granules are less concentrated around 60% while tablets are 90%.

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