How to Raise Chlorine Level in Your Pool with Bleach

If you are looking for less inexpensive ways to increase your chlorine levels in your pool, you should consider using a bleaching agent, because, this product may already available in your household. Bleaching agents are often used in your laundry room or cleaning any stains in your home and it’s not difficult to find in your local stores. Bleach is also be also used to shock your pool

Bleach is often divided into three major classes: Chlorine-based, Peroxide-based, and Sulfer Dioxide-based. If you are concern about raising chlorine levels in our pool, you only need to consider Chlorine-based bleach. 

Chlorine-based bleach is widely used to sanitize/disinfect water, medical equipment, or in our household laundry. The widely used compound used in chlorine-based bleach is Sodium Hypochlorite.

When you are using bleach in your pool as a primary source of chlorination, you need to add bleach in your pool daily at a very slow pace and it’s important to test your pool chlorine level daily. 

Bleach vs Chlorine for Disinfection

Pool chlorine is made up of Calcium Hypochlorite, while sodium Hypochlorite is present in the household bleaching agent.


  • Bleach is inexpensive and available on most of your local store
  • You can use it directly in your pool or throughout your skimmer
  • Bleach has very very weak chlorine concentration against pool chlorine
  • The Main Chemical compound is Sodium hypochlorite
  • Bleach is mixed up with many other ingredients

Pool Chlorine

  • Pool Chlorine is expensive
  • It has a stronger concentration of chlorine, so you need to dispense it very carefully
  • Pool Chlorine is a natural source of chlorine, which means, it’s not mixed up with another ingredient
  • The Main Chemical compound is Calcium Hypochlorite

How to Raise Chlorine Level in Pool with Bleach

The main purpose to use bleach in your pool to increase the free chlorine in an inexpensive way. You need to follow the below simple steps to raise your free chlorine using a bleaching agent. Just make sure, you are not using scented bleach or specialized bleach, only use the original bleach.

  1. Check your pool’s pH level

    Before adding bleach to your pool, you need to check the water pH level. It is important because, if the pH level is more than 7.8, your chlorine will lose quickly

  2. Check the cyanuric acid level

    Cyanuric acid is often called a pool conditioner or stabilizer. The chemical compound of bleach is Sodium hypochlorite. After putting bleach in your water, it will convert to sodium hypochlorite ions. When UV rays of sunlight hit, the chlorine parts will evaporate, which means, you will need more bleach and lots of money will be wasted.
    If there is enough Cyanuric Acid (CYA), it will create bonds with the sodium hypochlorite ions and it will protect the chlorine part from evaporation when sunlight hits. CYA should be between 30 ppm to 50 ppm. Otherwise, you need to add more CYA, if the ppm level is lower. 

  3. Measuring your pool volume

    You need to measure the volume of your pool water to determine the required amount of bleach. You need to know the length, wide and deep of your pool to determine the pool water.

  4. Check the Existing Chlorine level

    It’s time to test your existing chlorine level before adding bleach to your pool. You can use your pool test kit to perform the job. If you already have a higher chlorine level (over 5-6 ppm), then you need to forget the steps and consider lowering your chlorine level

  5. Start Adding Bleach to the pool

    Now you know how many gallons of water you have in your pool and the existing chlorine level. So, it’s time to find how much bleach you need to add to your pool. If your existing chlorine level is 2 ppm and you need to raise it the 4 ppm. You can follow the attached chart.Pools Water Volume vs required bleach

  6. Process of Adding the Bleach

    It’s better if you can manage a measuring cup in ounces for diluting the bleach in your pool. You can add bleach directly to the pool water or by the pool skimmer. You can add the total amount of bleach within 3 to 4 days. This will help you to prevent any dramatic change in chlorine level and pH.

  7. Do the regular tests of pH, CYA, and Chlorine level

    This is important to maintain a proper pH level (between 7.2-7.80, CYA (30-50 ppm), and Chlorine (3-5 ppm). Changing one of these parameters could be responsible for the fluctuation of a healthy pool water chemistry.

Using Bleach in a Kiddie Pool

We already know the concentration of chlorine is lesser in the bleaching agents. Therefore, adding bleach to your kiddie pool is safe. Keep in mind that, you only need to use basic or original bleach instead of scented bleach in your kiddie pool.

Most of the kiddie pools are made of plastic. Clorox Regular Bleach is widely used as a basic bleaching agent for pools. It is also safe for plastic pools. You need to add ⅛ cup or 1 ounce of bleach with every 100 gallons of water. 

Frequently Asked Questions

  1. How long do you have to wait to go swimming after putting bleach in a pool?

    If you want a straight and short answer, then, it’s safe to wait at least 4-6 hours before you start swimming again.
    To determine the accurate time, you need your total pool water and filter capacity. Your swimming pool is ready to swim if your one cycle of filtration is complete. 

  2. Can you use bleach tablets in a pool?

    Bleach tablets are for cleaning toilets and yes, it’s possible to use a bleach tablet in your pool as a chlorine source. There is not any evidence that it is dangerous for your pool. But it will be quite a hassle to dilute in your pool and not economical for disinfecting your pool, because, bleach tablets are more expensive than chlorine tablets.

  3. Can you put bleach in an inflatable pool?

    Some people may afraid to use bleach in an inflatable pool due to the pool’s plastic material. But, it’s completely safe, if you are using basic and original bleach. Do not use the scented or specialized bleaching agent, as they are mixed up with another chemical compound, which may be harmful.

  4. How long does bleach last in the pool?

    There could be two possible answers. If you are talking about the bleach bottle, which you are keeping in your home, then, it’s better to replace it every 6 months.
    And, if you are talking about the bleach in your pool water, then, its depends on the sunlight, presence of Cyanuric Acid, and pH level.

In summary, using bleach in your pool is really hassle-free. You just need to maintain the above steps carefully. You should use a good quality pool test kit and basic bleach. Test your chlorine level regularly to determine the frequency of adding the bleaching agent in your pool.

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