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Why is my pool losing chlorine?

4 min read

Asked by: Jessica Lieras

You might have an infestation of algae, fungus or bacteria that can deplete normal chlorine levels and it is possible for this to occur without many visible signs. Your pool may appear to have a dusty look on the pool bottom. If you brush it and it clouds the water, then it is most likely a Mustard Algae.

Why is my chlorine dropping so fast?

If your water’s pH is too high, it hinders the chlorine’s ability to efficiently clean the pool. A water pH level that is too low causes the chlorine to dissipate more quickly. Therefore you’ll need to add more chlorine to accomplish the task.

How do you prevent chlorine loss in a pool?

To prevent excessive chlorine loss:

  1. Add Pool Complete™ to your weekly maintenance routine to reduce contaminant levels.
  2. Maintain an appropriate sanitizer residual of 1-3ppm.
  3. Shock/oxidize routinely or as needed depending on bather load.
  4. Test water frequently and adjust as needed.

What is eating the chlorine in my pool?

Look for algae. Algae growth in your pool will rapidly consume free chlorine. High temperatures, high levels of phosphates, dirty or clogged filters and low chlorine levels can promote algae growth. Scrubbing with a brush can remove algae from surfaces if they have accumulated in one place.

How do you keep chlorine levels stable?

How to Help Pool Chlorine Last Longer

  1. Chlorine Stabilizer. Chlorine stabilizer or Cynanuric Acid (CYA) is a pool balancing chemical used to help chlorine last longer. …
  2. Algaecide. Algaecides are used to treat and prevent pool algae. …
  3. Clarifier. Clarifiers help to keep pool water clear. …
  4. Test. Pool chemistry can change quickly.


How do you stabilize chlorine in a pool?

Really only have to add stabilizer. Once at the beginning of the year test the water for cyanuric acid at the beginning of the year put in enough siren arc acid to bring you up to 50.

How many times a week should I put chlorine in my pool?

Shock is liquid or granular chlorine. You should add one gallon (or one pound) of shock per 10,000 gallons of pool water every week to two weeks. During hot weather or frequent use, you may need to shock more frequently.

How long does chlorine last in pool?

Most floating chlorinators can hold anywhere from two to eight weeks worth of chlorine, depending on conditions such as the season and your pool’s size. An automatic feeder works in a similar way, allowing it to mix with the pool water slowly and deliberately.

How do you stop chlorine from evaporating?

In the simplest of terms, a pool conditioner or stabilizer helps your chlorine stay in the water longer. In other words, it prevents drastic chlorine loss. More specifically, it binds to chlorite ions (your free chlorine), making them impervious to the sun’s rays.

Is it OK to swim with low chlorine?

As mentioned above, you could probably swim in a pool without chlorine without any major health issues. However, long-term use of a pool lacking chlorinated H2O could make you sick or, at the very least, contribute to rashes and other types of skin irritation.

How do I raise the free chlorine in my pool?

And we'll go into 12,000 gallon pool again just go ahead and set your pump to run 12 to 24 hours if you have a variable speed pump set it at 3100 rpms. And when it's at a higher speed.

Will Shock raise free chlorine?

“Shocking” refers to the process of adding chlorine or non-chlorine pool chemicals to the water in order to raise the “free chlorine” level. The goal is to raise this level to a point where contaminants such as algae, chloramines and bacteria are destroyed.

What happens if you put too much shock in a pool?

Although, if you overdo the shock treatment, you risk getting green hair from chlorine due to the excess chlorine oxidizing the copper in the water. You can execute a shock treatment with a few different types of pool shock, just be mindful of how much you’re using.

When Shocking a pool should the pump be on?

Ensure the pool pump is running. Pour the mixture from the bucket into the water around the edges of the pool. Let the pump run for about 6 hours or more and test the water. Don’t use the pool right away – wait for the free chlorine levels to drop to 1 – 3 ppm before it is safe to swim.