No Free Chlorine in Salt Water Pool – Reasons with Solutions

The saltwater pool is not like the traditional chlorine pool. It uses dissolved salt to produce free chlorine for your pool water. So it doesn’t need to add additional chlorine. But the free chlorine in the saltwater pool can disappear because of debris or any mechanical problem in your salt generator.

So there can be no free chlorine in the saltwater pool. This problem can happen because of heavy use of your saltwater pool, not enough salinity, or the pH level and alkalinity of your pool getting depleted. So you need to check the chlorine level of your salt pool regularly.

If your pool doesn’t have enough chlorine, you need to increase the level by pouring salt or increasing the run time of your salt generator. Try to maintain the chlorine level between 1 ppm and 3 ppm to enjoy the saltwater pool perfectly.

No Free Chlorine in Salt Water Pool

What causes No free chlorine in a saltwater pool?

What can be the reasons for this problem? Well, let’s see.

When the chlorine generator doesn’t run for enough time

The pool’s chlorine consumption rate depends on the user or swimmers. If there are a lot of people who swim in the pool, the chlorine will disappear as fast as possible. Also, when it is raining too much, or there is a lot of sunlight, the chlorine in the pool evaporates more quickly. 

If your pool is being used on a heavy scale, you need to run the chlorinator for at least eight hours to twelve hours so that it can provide enough chlorine to the pool. If your chlorine generator isn’t running for that much time, this issue could be due to you having no free chlorine in the saltwater pool. 

To check it, you first need to check the chlorine level of your saltwater pool on an average day. Then don’t use your saltwater pool for at least 24 hours and recheck the chlorine level. If there is a vast difference in the stats, the generator is not running enough.

If there is not enough salinity in your pool

Perfect salinity is required to produce an exact chlorine level in your saltwater pool. So you need to check the salinity level of your pool if it is not producing enough chlorine. The precise level of saltiness in your saltwater pool has to be between 2500 ppm and 3500 ppm. 

So you have to check the saltiness of your saltwater pool. If the salinity of your pool is less than 2500 ppm, then the problem of no chlorine is occurring because of a lack of salt.

Because of a faulty generator

The faulty generator itself can cause lower chlorine levels in your pool. The generator can become faulty because the salts are not clean enough. When you are not cleaning the salt cells for an extended period, they can get stuck and cause problems in producing the proper chlorine level in your saltwater pool. So there can be no chlorine in your saltwater pool.

If the water in your saltwater pool is not balanced enough

If your saltwater pool’s pH and alkalinity level are not perfect, the chlorine level in your pool will decrease. The ideal pH level of a saltwater pool is 7.2 to 7.6, whereas the alkalinity in your pool must be 80 to 120 ppm. So if there is not enough free chlorine in your saltwater pool, you need to check the pH and the alkalinity. Low pH and alkalinity levels can cause no chlorine in your saltwater pool.

How to solve No free chlorine in saltwater pool problems? 

Now let’s see how you can solve the problems.

By cleaning your saltwater pool debris regularly

You need to clean the debris in your saltwater pool regularly. This debris can cause a lack of chlorine in your saltwater pool. 

To do it, 

  • You need to stop the motor and generator of your saltwater pool. 
  • You need to empty the pool by removing all the water inside it. 
  • Clean the pool area with soap or detergent. 
  • Wash all the areas with clean water.
  • Refill the pool area with saltwater.

Provide extra run time for the chlorine generator 

Free chlorine can be decreased if the pool is being used a lot, but it doesn’t get the perfect run time of the chlorine generator it needs. So you need to check if your chlorine generator is running enough or not.

To check it,

  • First, you need to check the chlorine level of your saltwater pool.
  • Then start running your chlorine generator for 24 hours.
  • Don’t use the saltwater pool at that time. 
  • Again, check the chlorine level after 24 hours.

If there is a massive difference between these two stats, you need to increase the run time of the chlorine generator. Usually, running the chlorine generator for 8 to 12 hours is perfect for solving the no-free chlorine problem in your saltwater pool.

Increasing the salinity of your saltwater pool

The low salinity of your pool water is one of the main reasons for the lack of free chlorine in your saltwater pool. So you need to check and increase the level of salinity in your pool if needed. Your saltwater pool must have a salinity of between 2500 ppm and 3500 ppm.

To do it, 

  • You need to have a salt-testing kit.
  • You will need to check the level of salinity using the salt-testing kit. 
  • If the result comes in at less than 2500 ppm, the proper chlorine level is not developing. 
  • Then you need to turn off the generator that produces chlorine in your saltwater pool.
  • Pour salt into your saltwater pool by checking into the salt table to see how much salt you need for your pool. 
  • Give it some time so that the salt can dissolve with the water. 
  • After that, you need to turn on the generator again.

Repair the generator if the problem is occurring because of it

If the generator is the leading cause of no free chlorine in your saltwater pool, you need to repair it asap.

To do it, 

  • First, turn off the generator.
  • Then dry the generator perfectly.
  • Contact a professional to repair the generator.
  • If you need to change the pump, don’t buy cheap products. 
  • After that, you need to resemble the generator. 
  • Run the generator.

If the problem occurs because of the salt cell inside the generator, you need to clean it perfectly.

To do it, 

  • First, you need to remove the salt cell from the generator.
  • Make a mixture of 94% water and 6% muriatic acid.
  • Soak the salt cell ideally with the mixture. 
  • You need to soak the salt cell of the generator for at least 10-15 minutes, but don’t soak for more than 1/3 of an hour. 
  • Then clean it. 
  • Attach the salt cell to the generator. 
  • Run the generator.

How to increase free chlorine in a saltwater pool? 

  • As the debris in your saltwater pool can cause less chlorine, you have to clean them regularly. 
  • Try to maintain the chlorine level between one ppm and three ppm.
  • If your chlorine level is lower or higher than usual, you need to modify the chlorine generator run time for a longer or shorter time. 
  • You must test the pH of your pool every week. 
  • Try to maintain the pH rate between 7.2 and 7.6 for a sufficient chlorine level for your saltwater pool. 
  • You must check the salt level of your pool and try to maintain it at a level between 2700 ppm and 3400 ppm.
  • In the rainy or summer season, the salt in your pool vanishes, so you need to add additional salt to your pool at those times. 
  • If the pool is being heavily used, you can shock the pool using the super-chlorine feature to increase the chlorine level vastly. 
  • Detach the salt cell once every three months from your chlorine generator and clean it.

FAQs

Still got some questions? Check the section below.

Is there free chlorine in a saltwater pool?

Yes, there is a free chlorine saltwater pool. The saltwater pools differ from the usual chlorine pools in that there must be generated chlorine. The chlorine level of the saltwater pool is shallow, which is about one to three ppm.

Will Shock raise free chlorine?

Yes, shock raises the free chlorine. The shock is used when the saltwater pool is being overused. When you shock a saltwater pool, it releases chlorine and chemicals that kill the contaminants. So the level of free chlorine increases.

Why is my free chlorine so low?

Your free chlorine in the saltwater pool can be low due to debris. It can also happen when the pool is not getting the proper run time from the salt generator. Even when your generator salt cell is damaged, it produces less free chlorine. The diversity of pH and alkalinity levels in your saltwater pool can also be a reason for the lack of free chlorine.

Conclusion

The saltwater pool doesn’t need to add extra chlorine. Instead of adding chlorine, it produces chlorine by dissolving salts. But the chlorine can get lost because of excessive use or a faulty salt generator. As a result, there will be no free chlorine in the saltwater pool after a couple of days. 

So you need to take the necessary steps to produce enough chlorine for your saltwater pool. You need to check the chlorine level regularly and maintain a level of chlorine of between 1 ppm and 3 ppm. If the salt generator gets faulty, you need to repair it as soon as possible. 

If the problem is in the salt cell, you have to change it. While changing it, don’t buy cheap products. Keep the level of salinity and pH sufficient so that your saltwater pool can generate enough chlorine.

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