As a pool owner, you must make many decisions regarding the care and maintenance of your pool. One of those decisions is what type of chlorine to use, liquid or tablet? Both have pros and cons, so it’s important to weigh them before deciding. Here’s a quick comparison of liquid chlorine vs. tablets to help you make the best choice for your pool.

What’s The Difference Between Liquid Chlorine and Tablets?

Chlorine is a chemical used to disinfect water and cleanse it of impurities. When added to water, chlorine creates a chlorinated environment that is hostile to bacteria and other microorganisms. This makes it an effective way to purify water for drinking, swimming, and other purposes. Chlorine comes in two forms: liquid chlorine and chlorinating tablets.

  • Liquid chlorine is a powerful disinfectant and sanitizer used in swimming pools to kill bacteria and algae. Liquid chlorine is also used in industrial applications and water treatment plants.
  • Chlorine tablets are slow-dissolving tablets that are used to sanitize swimming pool water. They are also used in hot tubs and spas. Chlorine tablets slowly release chlorine into the water, killing bacteria and algae.

So, what’s the difference between the two?

Liquid chlorine is just that, a liquid. It is typically sold in concentrated form and must be stabilized with a stabilizer before use. On the other hand, chlorinating tablets are solid tablets that dissolve slowly in water.

Each has its advantages and disadvantages. Liquid chlorine is generally more expensive than chlorinating tablets. However, it is also easier to use since you don’t have to fiddle with dissolving tablets. On the other hand, chlorinating tablets are more stable and last longer than liquid chlorine.

What Are The Pros and Cons of Liquid Chlorine?

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Liquid chlorine has many benefits, making it a popular choice for swimming pool and spa owners. It is effective at killing bacteria and other contaminants, and it is also relatively affordable. However, there are some downsides to using liquid chlorine, including the potential for skin irritation and damage to swimwear.

Let’s take a closer look at the pros and cons of liquid chlorine:


  1. No By-Products Left: Unlike other methods of chlorination like calcium hypochlorite, liquid chlorine does not leave any by-products behind in the water. This means that you won’t have to worry about scaling or cloudy water due to using liquid chlorine.
  2. Easy to Use: Liquid chlorine is very easy to use. Simply add it to your pool or spa and let it do its job. There is no need for special equipment or complicated instructions.
  3. Disperse Quickly: Liquid chlorine disperses quickly and evenly in water, making it more effective at killing bacteria and other contaminants.
  4. Affordable: Liquid chlorine is one of the most affordable options for chlorinating your pool or spa.


  1. Requires Stabilizer: Liquid chlorine requires a stabilizer, such as cyanuric acid to prevent it from evaporating too quickly. This can add to the cost of using liquid chlorine.
  2. Can Irritate Skin: Liquid chlorine can irritate the skin, especially if it is not stabilized properly. It is important to wear gloves and appropriate clothing when handling liquid chlorine.
  3. Low Shelf Life: Liquid chlorine has a relatively low shelf life, so it is important to use it quickly after opening. Once bought from the pool store, liquid chlorine should be used within 3-6 months for best results.
  4. Can Damage Swimwear: Liquid chlorine can damage swimwear, so it is important to rinse off after swimming in a pool or spa that uses this type of chlorine.

All things considered, liquid chlorine has both pros and cons. It is important to weigh these factors when deciding whether or not to use liquid chlorine in your pool or spa.

Also Read: How to Lower Chlorine in Pool?

What Are The Pros and Cons of Chlorine Tablets?

Chlorine tablets offer many benefits for pool owners looking to keep their swimming area clean and free of harmful bacteria. They are a cost-effective and easy-to-use option for chlorinating commercial swimming pools, and they offer a consistent level of chlorine that can be difficult to achieve with other methods. However, there are some potential drawbacks to using chlorine tablets as well, and it’s important to be aware of these before deciding on which method of chlorination is right for your pool.

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  1. Convenience: They can be added to a pool’s skimmer basket or floating dispenser, dissolving gradually over time, and releasing chlorine into the water. This means you won’t have to worry about adding chlorine to your pool daily, and you can set it and forget it.
  2. Cost-effectiveness: Chlorine tablets are generally very affordable and can last a long time if used properly. This makes them a great option for budget-conscious pool owners.
  3. Consistency: Tablets offer a more consistent chlorine level than other methods, such as granules or liquids. This is because they dissolve slowly and release chlorine steadily over time, rather than all at once.
  4. Maintain pH Balance: Chlorine tablets can help maintain your pool water’s pH balance, as they release chlorine and other chemicals that can help regulate pH levels.
  5. No Need For Stabilizer: Chlorine tablets do not require a stabilizer, unlike liquid chlorine. This can save you money and time, as you won’t need to regularly add a stabilizer to your pool.
  6. Last Longer Than Liquid: Chlorine tablets can last much longer than liquid chlorine, as they dissolve slowly over time. This means that you won’t need to add them to your pool as often, and you can save money in the long run.
  7. High Shelf Life: Chlorine tablets have a long shelf life and can be stored for a long time without losing potency. This makes them a great option for those who want to stock up on chlorine or live in an area where severe weather might cause power outages.
  8. Easy To Use: Chlorine tablets are very easy to use, and you don’t need special equipment to add them to your pool. Just add them in and let them dissolve, and you’re all set.


  1. Can Overdose Pool: One of the biggest drawbacks of chlorine tablets is that they can easily overdose your pool if you’re not careful. This can lead to irritation of the skin and eyes, and it can also make the water smell bad. Be sure to follow the dosage instructions carefully to avoid this problem.
  2. Can Build Up In Pool: If chlorine tablets are used too often, they can build up in your pool and become difficult to remove. This can lead to cloudy water and may require special filters or chemicals to clear up. Be sure to follow the manufacturer’s instructions to avoid this problem.
  3. Can Affect pH Balance: If too many chlorine tablets are used, they can affect the pH balance of your pool water. 1. Can Cause Irritation: Some people may experience skin or eye irritation when swimming in a pool that has been treated with chlorine tablets. This is because chlorine can be released into the air in gaseous form, which can cause irritation when breathed in or come into contact with the skin.
  4. Can Damage Pool Equipment: When used improperly, chlorine tablets can damage pool equipment, such as ladders, steps, and handrails. This is because chlorine can corrode pool surfaces and equipment if present in high concentrations.
  5. Requires Proper Storage: Chlorine tablets must be stored properly in a cool, dry place, out of direct sunlight. They can degrade and become less effective if they are exposed to moisture or heat.

Which Is The Better Chlorine Substance for a Better Pool Sanitizer?

There are many ways to sanitize a pool, but liquid chlorine or chlorine tablets are the two most common and effective methods. So, which is the better option? It depends on personal preference, as both have their pros and cons.

Liquid chlorine is a great choice for those who want to adjust the chlorine levels quickly and easily. It’s also less likely to cause staining than tablets since it dissolves more evenly in the water. On the downside, however, it can be more difficult to store and requires a stabilizer.

Chlorine tablets, however, are easy to store and transport since they come in compact tablet form. They’re also less likely to evaporate than liquid chlorine, which means they can last longer. However, they can be more difficult to dissolve and may cause staining if not used correctly.

So, which is the better option for you? It depends on your needs and preferences. If you want an easy-to-use and adjustable chlorine solution, liquid chlorine is a great choice. If you’re looking for a more compact and long-lasting option, then chlorine tablets might be better suited.

Also Read: Best Pool Shock


Are Chlorine Tablets The Same As Liquid Bleach?

No, chlorine tablets are not the same as liquid bleach. Chlorine tablets are made with sodium hypochlorite, a type of chlorine. Liquid bleach is made with chlorine gas. Chlorine tablets are more stable and concentrated than liquid bleach, so they last longer in storage.

Do I Need Chlorine Tablets In My Pool?

You need chlorine tablets in your pool to kill bacteria and other organisms that can cause disease. Chlorine tablets also help to prevent algae growth. They are an important part of pool maintenance.

Why Are Pool Chlorine Tablets So Expensive?

Pool chlorine tablets are more expensive than liquid bleach because they are more concentrated and last longer in storage. They are also easier to use than liquid bleach, so you don’t have to worry about spillage or measuring the correct amount.

Can You Put Chlorine Tablets Directly Into The Pool?

Yes, you can put chlorine tablets directly into the pool. They will dissolve and release chlorine into the water. Be sure to follow the manufacturer’s directions for how many tablets to use based on the size of your pool.

How Long After Putting Chlorine In A Pool Can You Swim?

Before swimming, you should wait at least 30 minutes after putting chlorine in a pool. This gives the chlorine time to work and kills any bacteria in the water. But it’s better to test the water first to make sure the chlorine level is where it should be.

Can I Use Liquid Chlorine Instead Of Tablets In My Pool?

Yes, you can use a liquid form instead of chlorine tablets in your pool. But liquid bleach is less concentrated and doesn’t last as long in storage. It’s also harder to measure the correct amount, so you may end up with a weaker solution that won’t work as well.

Do I Need A Special Pump To Circulate The Water In My Pool?

No, you don’t need a special pump to circulate the water in your pool. Any type of pool pump will do. Just be sure to follow the manufacturer’s directions for how often to run the pump and how long to run it each time.

How Often Should I Test The Water In My Pool?

You should test the water in your pool at least once a week. But you may need to test it more often if you have a lot of swimmers or if the weather is hot and sunny. Chlorine levels can drop quickly in these conditions, so it’s important to keep an eye on them.


So, what is the best way to sanitize your pool, liquid chlorine or tablets? The answer may depend on a number of factors, including personal preference, ease of use, and cost. If you are looking for the most effective and efficient way to clean your pool, liquid chlorine is the clear winner. However, tablet chlorinators may be the way to go if you are looking for a more convenient option. Whichever route you choose, make sure to follow the instructions carefully and always test your pool water before diving in.

Last Updated: November 20, 2022 / Categories: Outdoor & Garden, Pool & Spa / 9.9 min read / Tags: , , /

About the Author: Brian Stilts

Brian Stilts

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