Cloudy Pool Water | What It Means and What to Do

3 Reasons Why And 3 Ways To Stop Cloudy Pool Water.


If you’ve come to this page, then you are probably asking yourself, ‘Why is my pool cloudy?’. Well, there are actually several reasons you might have cloudy water. This page will cover some of the reasons why a cloudy pool might be a problem for you. This might help you to devise methods for prevention, which will help you to avoid treatment in the first place. If you have cloudy pool water and it's already too late, I will also offer you three solutions for fixing the problem now.

Firstly, though, the reasons why…


Pools are usually located outside, so the environment is going to play a huge role in what is going into your pool water. A Pool Cover can help with this, but it doesn't protect against everything. This Includes Algae, which can need a separate solution altogether.

Pool Filter

You should be running your pool filter at least 8 – 10 hours a day. It might seem like your pool is doing fine, but impurities can build up over time and surprise you before you can do anything about them. Anything less than 8 – 10 hours a day, and you are at risk of having cloudy pool water.



The chemical balance in pool water is one of the most important factors when it comes to keeping pool water nice and clear. You need to look out for the pH balance, along with the amount of chlorine which is being put into the pool. A chemical imbalance can definitely lead to cloudy and unhealthy pool water.

The Solutions

There are three primary ways of ensuring your pool is safe. Each method offers different advantages and disadvantages.

Using A Pool Clarifier

Pool Clarifiers work by causing all the small particles in the pool to block together, and so form a bigger particle which your pool filter will then be able to pick up. On their own, standard pool filters are going to have a hard time picking up the particles, but when they are clumped together it’s much easier. The technical name of this is a coagulant. This has the same principle behind it as blood, which when cut will harden to remove the impurities.

Standard pool clarifiers are usually available from most pool retailers and are a convenient option. The pool clarifier does cause great results, but it is definitely not a quick solution to problems you might have. If you are in a rush, then you are going to want to try something a little different; something like Flocculant.

Prepare With Pool Floc (Flocculant)

Pool Floc is a lot of work and is probably best reserved for people who are in a rush. If you are going to host an event the next day and your pool water is cloudy, pool floc will help, but it will take some extra effort.

Floc works in a similar manner to clarifier. The clumps, however, causes all the blocked together particles to move to the bottom of the pool. This means that the pools filtration system probably can’t clear them from the pool. At this point, you are probably going to have to manually remove the cloudy muck.

It’s not the nicest or most relaxing method, but it does work if you’re in a rush.

Start The Shock Treatment (Superchlorination)

If you want nice and clear pool water, one of the best methods is called shocking. Shocking is basically when you shock your pool with different chemicals. This helps to remove all the impurities which chlorine has managed to group together.

You see, when you put chlorine into your pool, it works as a pool clarifier; it groups together smaller particles. When the particles are grouped together, the water can be shocked with another chemical and the chlorine will evaporate along with the impurities it has managed to clump together.

Obviously, because this is quite a reaction filled process, you should know that you will still have cloudy pool water after shocking. This is normal and nothing to be worried about. Cloudy pool water after shocking dissipates quickly.

Just because you will still have cloudy pool water after shock treatment, doesn’t mean that this method doesn’t work. Many professionals recommend this method. But you should be aware that it is important to be careful when handling the chemicals involved in this process.

I hope this page has answered your question of ‘Why is my pool cloudy?’. If you still have cloudy pool water after shock treatment, then you simply need to wait for it to subside. If, however, you still have cloudy pool water after other methods, you might not be using the correct chemical balances. Alternatively, you might have other factors such as environment or you pool filter to blame.

Make sure to stay safe when handling any chemicals, and keep that pool clear!

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