How To Fix Cloudy Pool Water With Ease Using 3 Proven Methods


Cloudy pool is a common experience but fixing a cloudy pool could be a nightmare most especially if you are not adequately equipped with the right knowledge on how to fix one. What every pool owner must know how to do is how to fix cloudy swimming pool water whenever it happens, irrespective of the degree of cloudiness. Or you can at least forget about it and hire the services of a pool tech.

But do not worry, we’ve got you covered in this article on what to do whenever that happens. To do that, we shall first and foremost examine the cause(s) of the problem and without which there can never be a solution. Once the problem is known and tackled, your pool will become sparkling and crystal clear again.

Though there are several methods out there on how to fix your cloudy pool water, we have outlined time tested and proven 3 methods in this article on how best to fix your cloudy pool water with ease; and without consuming much of your precious time.

In fact, it could turn out to be fun if you follow our proven methods…

Causes of Cloudy Pool Water

There are be several reasons why your swimming pool’s water could suddenly turned flat, or hazy, or murky, or in general, cloudy without notice. Three of which we consider very important that deserves your attention:

  1. Environmental Factors:

The surrounding environment under which the pool is operating could be a major reason why your pool water is cloudy. This includes small animals such as birds and insects, leaves from trees, debris, weather, algae, the sun, pool type and set up, and bushes around the pool.

While smaller animals and insects will always find their ways into your pool, the droppings from birds could be very embarrassing. In the same vein, the accumulation of dust and particles from fallings leaves could easily get you into trouble and mess up your pool. The same can be said of the sun’s ultra violet (UV) light that depletes the chlorine concentration in your pool not to mention other weather conditions and construction types.

  • Chemical Imbalance

The imbalance in the level of concentration of the chemicals in your pool is one of the major reasons why your pool could turn cloudy. Having more than the required amount of one chemical or not having enough of another is a big factor. Therefore, checking the chlorine concentration of your pool, the alkalinity, the pH level, and the calcium hardness are vital in maintaining a clear pool water.

  • Chlorine – This is the main sanitizer of choice used by pool owners in the fight against bacteria and microbes. However, the range of concentration is such that it must be between 1 and 3ppm (parts per million) to keep the water clean and also prevent it going cloudy provided every other thing else remain balanced.

  • pH level – Maintaining a balanced pH level is a necessity for other chemicals in the pool to function optimally so as not to cause particles to build up that could lead to a cloudy pool. The recommended level is between 7.2 and 7.6 on the pH meter using simple pool test kits.
  • Alkalinity – The recommended alkalinity level in your pool should be between 80 and 120ppm (parts per million) or between 100 and 140ppm for painted, vinyl, and fiberglass in-ground pools. A very high alkalinity can cause your pool water to turn cloudy.

  • Calcium hardness – The measure of how much calcium is contained in the water is what is referred to as calcium hardness and the recommended level for your pool water should be between 200 and 400ppm.  While low level of calcium hardness could damage your pool’s fittings, very high level cold as well lead to cloudy pool water.


Even when your pool remains cloudy after shocking, there is nothing to worry about because it will be clear over time provided you keep your filter running. And if it doesn’t clear up within a day or so, then it could mean that:

  • Your filter system have been compromised
  • The rest of the water chemistry is out of order or
  • Your chlorine shock isn’t functioning properly.

You will need to look out for a new brand of shock especially the types that uses calcium hypochlorite as the main active ingredient.

  • Your Pool Filter

Pool water that isn’t properly circulated is at the risk of becoming cloudy. The design of the filter system is such that the last water in the pool is expected to pass through the filter at least once in 4 hours to always keep the water clean and refreshed. Therefore, the filter system should be capable of running for at least 8 to 10 hours per day to avoid the possibility of your pool getting cloudy.

A good circulatory system is highly dependent on your pool’s pump capacity (flow rate) and efficiency.

How to Fix Cloudy Pool Water
Having critically examined the causes of cloudy pool water from different perspectives, you’re now better placed on how best to fix the problem. With the following proven 3 methods, your pool water will become clean and sparkling again without much fuss:

Method #1: Use a Pool Clarifier

A Pool Clarifier helps to remove cloudiness in pool water with ease and it is recommended for at least once in a week. A good Pool Clarifier helps to coagulate the tiny particles of dirt into larger lumps for the filter to pick them up easily.

Without a Clarifier, the tiny dirt particles sometimes escapes through the pool filter and finds their way back into the pool again. As a coagulant, the particles form lumps large enough to be filtered out by the filter and your pool is on its way to becoming sparklingly clear again.

Method #2: Using Pool Flocullant

This method is similar to using the Pool Clarifier in terms of chemical activities but recommended only when you need to fix your cloudy pool quickly so as to meet up with certain exigencies. The only difference is the method of evacuating the larger lumps of particles from the bottom of your pool with a little extra effort and labor.

As against Pool Clarifier, the chemical known as Pool Floc or Pool Flocullants works by gathering all the tiny particles together at the bottom of your pool, thereby forming a very huge cloud underneath. The cloudy pool particles are better evacuated from the bottom of the pool through manual vacuum using your pool pump. This is because the chemical will not help the pool filter to pick up those larger particles for automatic pool cleaners.

The pool cloud is not allowed to pass through the pool filter but vacuumed out to waste, that is, the pool filter settings must be on the “waste” or “backwash” option. And for DE or Cartridge filters, the drain plug should be removed entirely.

It’s however tedious and requires a lot of hard work with loss of plenty pool water but your pool will be cleared within 24 hours if done properly.  


  • As you vacuum out the cloud particles, considerable amount of water will be lost. So it’s a good idea to keep the hose running as you’re doing this to replace lost water.
  • It should take nothing less than half a day to clear out the debris from the bottom of your pool, during which period your filter should be put off.

Method #3: Using Filter System and Bottom Drain (s)

The Pool Skimmer works in harmony with the Pool Filter to remove debris or cloudy particles from the top water of your pool, at the detriment of the debris at the bottom. To achieve total cleaning, the Pool filter needs help to get to those debris at the bottom of your pool.

Helping the pool filter can be done in two simple ways:

  1. By constant stirring of the water, either through swimming or through pool brush such that the bottom particles could float to the surface
  2. Turn on the bottom drains

For an in-ground pool, there’s expected to be at least one bottom drain. Opening up the bottom drain(s) helps the filter to start pulling water off the bottom of the pool, where the cloudy particles are, and circulate back, clean water to the top.

On the other hand, if you have an above-ground pool and no drains, vacuum pool cleaner is required. When your manual vacuum pool cleaner is placed in the center, at the bottom of the pool, and turned upside down, it mimics the effects of a bottom drain. This helps your pool filter to pull water from the bottom via the manual vacuum cleaner, releasing clean and filtered water back to the top of your pool.

Maintaining your pool and equipment
on a regular basis will not only help you to extend the service life of your equipment but will also make your pool’s water safe, clean, and sparkling at all times.

In summary, fixing a cloudy pool as it were isn’t a big deal after all. With the 3 simple but highly efficient, straightforward and proven methods above, in addition to routine maintenance, you can be rest assured of clean, crystal clear pool water all round season.

The ‘health’ of your pool lies in its maintenance!

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