Why is my pool cloudy but chlorine level is good?

Author: Elsa O'Connell  |  Last update: Sunday, December 7, 2025

Filter or Pump Issues Dirty or damaged filter -If the pool filter is either too clogged up or too damaged to properly pull particles from the water, cloudiness can occur. Cleaning and inspecting the pool filter regularly will help to avoid these issues.

Why is my pool cloudy but chlorine is high?

One possible reason is the presence of high levels of dissolved metals or minerals, such as calcium or magnesium, which react with chlorine and create a cloudy appearance. Another cause could be the improper balance of pH and alkalinity.

How do I get the cloudiness out of my swimming pool?

Shock Your Pool

Pool shock – also known as pool clarifier -- is essentially a super-high dose of chlorine that removes combined chlorine molecules and takes away the cloudiness caused by debris, bacteria, or algae in the process. You should wait 24 hours to swim after shocking your pool.

Why has my pool gone green when the pH and chlorine levels are ok?

Filtration Issues

If the swimming pool filtration system is performing poorly, or not running enough hours, the debris that the filter would normally filter out can remain in the pool water, causing the sunlight to refract through the pool water, giving it a greenish tint.

How long does it take for cloudiness to go away in a pool?

It may take a couple of days for the debris to disappear completely, so make sure your pump runs for at least 24 hours for the best results. If you have very cloudy water, use a pool flocculant. Both clarifiers and flocculants bind microparticles into larger particles.

Cloudy Pool Water After Shocking | What's Going On?

Do you shock a cloudy pool?

Poor water chemistry causes most cases of cloudy pool water. Test your water to make sure it's properly balanced. Chlorine issues often cause hazy-looking water. Adding a recommended dose of pool shock to your pool can clear it right up.

Will baking soda clear a cloudy pool?

Baking soda, also known as sodium bicarbonate is naturally alkaline, with a pH of 8. When you add baking soda to your pool water, you will raise both the pH and the alkalinity, improving stability and clarity. Many commercial pool products for raising alkalinity utilize baking soda as their main active ingredient.

Is shock the same as chlorine?

1) What is the difference between chlorine and shock? Do I need to use both? Chlorine is a sanitizer, and (unless you use Baquacil products) is necessary for maintaining a clear and healthy pool. Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly.

Can too much shock turn a pool green?

Pools can immediately turn green after being shocked when they have metals like copper in the water. These metals oxidise when exposed to high levels of chlorine, which makes the pool water turn green. Adding a metal control product such as Zodiac Metal Remover will help to restore the pool water.

Why is my pool clear but no chlorine?

If you test your pool water and can't get a chlorine reading at all it may be due to very high chlorine demand. High chlorine demand is the inability to keep an adequate level of chlorine in the pool water even though the water appears to be balanced and properly maintained.

How often should I shock my pool?

HOW OFTEN SHOULD I SHOCK MY POOL? Shocking your pool regularly will help to keep the water clean and free of contaminants. You should aim to shock your pool about once a week, with the additional shock after heavy use. Some tell-tale signs that your pool needs to be shocked are cloudy, foamy, green, or odourous water.

Do pool clarifiers work?

Overall, pool clarifiers are a useful product for improving swimming pool water clarity. They come in a few different forms, including slow release tablets, fast acting tablets, and liquid clarifiers, and can be used in a variety of situations to help improve the appearance and cleanliness of your pool.

What does white mold look like in a pool?

If shown pictures of white water mold in pools, you would see a white fungus that looks similar to shredded tissue paper or mucus. It is flaky looking and typically floats on the pool water's surface, although it can also be submerged. This type of mold is non-pathogenic and presents minimal danger to swimmers.

What clears a cloudy pool fast?

A pool clarifier works with any filter type and works best with milder cloudy water issues.
  1. Skim, Brush, and Vacuum Your Pool. Remove large debris with a heavy-duty skimmer. ...
  2. Test and Balance Your Water. ...
  3. Shock Your Pool. ...
  4. Run Your Filter 24/7. ...
  5. Increase Your Pool Circulation. ...
  6. Add Pool Water Clarifier.

What are the symptoms of too much chlorine in a pool?

The effect of excess chlorine in pools is an alteration in pH levels of pool water, making it more acidic. Signs of high chlorine levels can include itchy sensations in the eyes, nose and throat, nausea, vomiting, dizziness, lung irritation, and skin rashes.

How often should I add a clarifier to my pool?

For best results, use the clarifier 4 to 12 hours after each shock treatment, super chlorination, or algaecide treatment. Recommended usage: 2 to 3 times a week.

Why is my pool still murky after shock?

If the pool water is hazy even after the pool shock, it is an indication of imbalanced levels of pH and total alkalinity. Usually the high level of pH causes calcium accumulation in the pool, affecting the clarity of the water. The high pH makes the water basic/alkaline and the low pH turns it acidic.

How long after putting shock in pool can I add clarifier?

When: Add a water clarifier to your pool at least a day after the shock treatment has finished. You could use a combination of the two with Clean and Swim's non-chlorinated shock treatment and pool water clarifier.

Can you put too much shock in a pool?

Is it possible to shock your pool too much? Yes—excessive shocking of your pool will keep it at an elevated chlorine level. This will cause irritation of the skin and eyes as well as excessive wear and tear on your pool filter system, including excessive corrosion of all metal parts.

Do I add chlorine or shock first?

Ideally, you should shock your pool at night, so the sun cannot interfere and destroy the active chemicals before they can do their job. Then, you can add your chlorine post-shock after the chlorine levels have fallen below 5 ppm.

Should I backwash after shocking the pool?

If you're dealing with an algae infestation, brush the pool after shocking to remove lingering debris and run the filter. Rinse or backwash your filter to avoid recontamination. If you've still got traces of algae, shock your pool again.

How to get a crystal clear pool?

To prevent cloudy pool water:
  1. Run the pump for at least 8 hours daily.
  2. Maintain a pH within the ideal range of 7.2 to 7.6.
  3. Maintain chlorine within the ideal range of 1 to 3 ppm.
  4. Use pool shock weekly. ...
  5. Chemically clean the filter or backwash when you open the pool and during mid-season.

What happens if you put too much baking soda in a pool?

If you put too much baking soda in your pool, your alkalinity will rise. That means you'll need to take steps to lower your alkalinity.

Will vinegar clear a cloudy pool?

There are several ways to remove calcium buildup, and the most effective include scrubbing off the deposits with white vinegar or dousing them in dry acid. It should be noted that the acid approach requires precautions such as gloves, goggles, and protective clothes.

Previous article
How long after treatment will you see bed bugs?
Next article
How do I protect my thermostat from direct sunlight?