How To Clean A Cloudy Pool? – 7 Main Reasons You Need To Understand

How To Clean A Cloudy Pool? – 7 Main Reasons You Need To Understand

Four typical pool problems can result in cloudy pool water: poor filtration, low chlorine levels, poor water chemistry, or contaminants in the water, like debris or algae. Here is a step-by-step guide on how to resolve these frequent problems and how to use a clarifier or flocculant to quickly clear up a cloudy pool.

The brief video tutorial is provided below. For a comprehensive troubleshooting guide for cloudy pool water, continue reading.

Cloudy Pool Water: Causes, Treatment, And Preventive Measures

Seven main problems can result in milky or cloudy pool water: improper levels of chlorine, imbalanced pH and alkalinity, very high calcium hardness ((CH) concentrations, a bad or clogged filter, early stages of algae, ammonia, and debris. The seven primary methods for clearing that cloudy water and restoring the health of your pool are covered in this article.

7 Ways To Clear Cloudy Pool Water

  1. balance the levels of free chlorine (FC).
  2. Eliminate ammonia.
  3. Eliminate the young algae.
  4. pH and TA levels should be tracked and balanced.
  5. proper calcium hardness (CH) values
  6. Replace the filtering agent or backwash the filter.
  7. Clean, scrub and vacuum the pool to remove foreign matter and mineral deposits.

4 Causes Of Cloudy Pool Water And Solution

Cloudy water is a result of inadequate filtration, low chlorine levels, poor water chemistry, and external contaminants. Here are the solutions to each of these problems.

1. Poor Filtration

Pool water that is cloudy is typically due to filter issues. Your filter can’t get rid of the minute impurities that make pool water cloudy if it’s not working properly.

SOLUTION: Maintain the circulation system of your pool by cleaning, maintaining, and running it frequently. Examine your filters for the following problems:

  • Your pool filter is clogged or obstructed. Backwashing your sand or D.E. is necessary if you haven’t cleaned your filter in a while. filter, clean you, or clean the filter’s cartridge. D.E. grids. For more guidance, see our guide to cleaning pool filters.
  • There is a lot of debris in your pump basket or skimmer basket. Your skimmer or pump basket should be cleared of any leaves, twigs, or other debris. View our pool skimmer troubleshooting guide if you frequently discover debris in your circulation system.
  • Replace the media in your pool’s filter. The media in your filter won’t be able to remove the impurities that make the water cloudy if it is worn out or damaged. Replace your cartridge filters every two to three years or change the sand in your filters every five years. If you have a D.E. filter, replace it or add new diatomaceous earth powder. grids.
  • You aren’t letting your filter run for long enough. Your pool’s entire water volume must pass through the filter system at least once per day in order to clear up a cloudy pool. A minimum of 8 to 12 hours per day must be spent operating your filter system.
  • You need to replace your pool’s filter or pump. Your pool filter system may start to malfunction as it ages, necessitating the replacement of significant equipment.

2. Low Chlorine Levels

Pathogens, bacteria, and cloudy water form when there’s not enough chlorine to sanitize your water. If there is a lot of debris, such as leaves, in your pool, the level of chlorine may decrease.

Additionally, if chlorine is not properly stabilized and there is a buildup of bodily contaminants like sweat or sunscreen, or if your water is exposed to the sun’s UV rays.

SOLUTION: Test your pool’s combined and free chlorine levels, add shock to rebalance them, and add cyanuric acid to stabilize a sun-exposed pool.

  • Do a free chlorine test. “The quantity of chlorine available to sanitize the water in your pool is known as “Free Chlorine.” The amount of chlorine present in your water is insufficient if these levels are low. Use test strips, and a liquid test kit, or deliver a sample to your nearby pool supply shop to conduct a free chlorine test. If you have a pool that uses chlorine or salt water, the combined and free chlorine levels should be between 1 and 3 ppm (parts per million).
  • Calculate the total chlorine in your system. Chloramines may develop if your free chlorine levels are lower than your total chlorine levels. Chloramines are a byproduct of chlorine sanitizing that can be abrasive and even irritating. The difference between your readings for free chlorine and total chlorine is your combined chlorine. Less than 0.5 ppm of combined chlorine is ideal.
  • Use cal-hypo shock to shock your pool. Use calcium hypochlorite shock to shock your pool to quickly increase the levels of free chlorine and eliminate chloramines. Approximately 60 to 80% of the active ingredients in your pool shock should be calcium hypochlorite. During the busiest pool season, shocking your pool once a week renews your sanitizer levels and avoids cloudy water. Visit our shock usage guide if you require additional assistance.
  • If necessary, test and add cyanuric acid. Make sure your water contains the appropriate amounts of cyanuric acid or CYA. By doing this, you can reduce the rate at which chlorine is deteriorated by UV rays from the sun. 30 to 50 ppm is the ideal range for your CYA levels. Please read our article on how to maintain a healthy level of cyanuric acid.
Clean A Cloudy Pool

3. Poor Water Chemistry: High Ph, Alkalinity, And Calcium Hardness Levels

Scale can form on your pool’s surfaces and inside of your plumbing when pH, total alkalinity, and calcium hardness levels are high. This may result in bacterial growth, pool filtration, and cloudy water. Additionally, poor water chemistry makes it more challenging for your chlorine to effectively function and eliminate contaminants.

SOLUTION: Your calcium hardness, total alkalinity, and pH should all be checked and balanced.

4. Contaminants, Like Debris Or Algae

Water that is cloudy can be caused by contaminants, particles, and small debris in your pool. This happens a lot in the spring. Cloudy pool water can also be brought on by early-stage algae growth.

SOLUTION: Clean your pool and shock it to combat algae in its early stages. After a rainstorm or whenever debris or pollen accumulates in your pool, test, balance, and clean the water.

Why Is My Pool Water Cloudy?

At the start of summer, you might notice algae and cloudy water depending on how carefully you closed the pool for the winter.

Usually, chemical imbalances are the main cause. You only need to test for all the chemicals and make adjustments if your water is algae-free. The pH should come first, followed by chlorine, and then other chemicals.

After adjusting all the chemicals, if the water is still cloudy, you can try using a water clarifier to clear the debris through the filter or a pool flocculant followed by a vacuum to remove any remaining particles.

Does Cloudy Pool Water Allow For Swimming?

Unclouded pools are not appropriate for swimming in. Contaminants and pathogens abound in cloudy pool water. Since swimmers cannot see the pool bottom, there is also an increased risk of drowning.