How to Get Rid of Pool Foam 


Pools are a great way to cool off in the summer, but sometimes they can be frustrating. One of the most common issues with pools is that they foam up and stay foamy for long periods of time. This article will discuss why this occurs and what you can do about it.

Some pools may have too much chlorine or not enough alkali which causes them to foam. The chemical reaction between these two makes them foam uncontrollably without any obvious warning signs. If you suspect your pool has an imbalance, there are several things you can do to fix this problem before it becomes worse like draining all water from your pool then starting over with freshwater or adding more chemicals into the mix if needed until it balances out again.

Once your pool is balanced, you’ll still need to periodically check its chemical levels. If it seems like you’re having ongoing issues with foaming, talk to a local expert about how often the chemicals should be monitored and what exactly should be added to get rid of any future problems.

Certain chemicals added to the water in a pool can foam. It is more likely to occur when there is too much of one chemical and not enough of another, and it happens most often with chlorine and alkali (AKA caustic soda or sodium hydroxide).

Too much chlorine will cause the formation of calcium hypochlorite (Ca(ClO) 2 ) which forms bubbles of oxygen gas. Not enough alkali (caustic soda or sodium hydroxide) means that little calcium hypochlorite (Ca(ClO) 2 ) will be formed, while some hypochlorous acid (HOCL) will remain. Hypochlorous acid reacts with water forming oxygen-hydrogen chloride gases:

HOCL + H 2 O → OCl- + H 3 O+

Hydrogen ions (H+) catalyse the reaction of calcium hypochlorite (Ca(ClO) 2 ) with water forming oxygen hydrogen chloride gases:

2 Ca(ClO) 2 + 2 H 2 O → 4 ClO- + 4 H 3 O+ + CO 2

These bubbles are always present in a chlorinated pool but are especially noticeable when there is not enough caustic soda or sodium hydroxide.

If you see bubbles in your pool, then it is probably chlorine and not some other chemical that is causing the foam. And the best way to get rid of the foam is to add more alkali (caustic soda or sodium hydroxide) to balance out the chemicals properly.

Active Pool  Chemical Testing

If you’re having problems with your pool foaming, there are a few things you can do to try and stop it. One of the simplest solutions is to add more water to the pool, which will help to dilute the chemicals that are causing the foam. You can also try using a pool clarifier, which will help to clear up the foam and make your pool look better. If the problem persists, it’s best to call a professional who can help get your pool back in working order.

A pool that continues to foam is not only frustrating but dangerous. A lot of things can cause a pool to foam, but here are some simple ways you may be able to stop the problem before it gets worse!

Alkalinity Too Low

When you have a pool, you need certain levels of alkaline to keep the water from becoming too acidic. However, if your alkaline is low, it may be causing excess foaming in the pool. A good way to solve this issue is to check your pH and alkalinity levels. If you do need to raise both of those, consider getting a professional on the job.

Too Many Chemicals

If your pool is filled with too many chemicals, this may cause problems. Take a look at how much chlorine and bromine has been added recently as well as how often it’s been added. Chlorine is typically added more often than bromine, so if your pool is foaming and you’re using both chemicals, try adding less of each. Also, check to see if the water has been treated recently.

Open All Year

If your pool is open all year long, it may cause problems with chemical levels because of evaporation. Evaporation brings oxygen to the surface of the water, which can cause foaming. It’s recommended that you close your pool during the wintertime because this will lower evaporation rates and also give you time to let your chemicals rebuild.

Too Much Bleach

You may be able to kill algae by adding too much bleach. However, this can cause problems because it will eventually start killing off your pool’s chlorine, which will create even more foaming! Be careful about using bleach in order to solve foaming issues because it may cause bigger problems down the line.

High Temperature

If you have a high average temperature, you may have issues with foaming. If the water is too warm, it will create a lot of foam because heat causes gases to be released. This means that if your average temperature is higher than normal, you should try adding more chemicals or close your pool for a little bit.

Sanitizer Level Too High

It’s important to have the right level of sanitizer in your pool, but if it’s too high, you may cause problems. Pool sanitizers are used to kill any bacteria or algae that will make your water dirty. However, when they are overused, this can create foam. Try reducing your sanitizer levels to solve any foaming issues.

Low Chlorine and High PH

If your chlorine levels are low but the PH level is high, this may cause foaming. This means that there is too much phosphates in your pool which can cause this problem. You should try adding more chlorine to solve the issue because it will help keep your PH level in check.

Pump Not Working Properly

If your pump isn’t working properly, it could be an issue with foaming. If you need to clean the filter around the pump, do so because this should help lower the amount of soap that is entering your pool. You may also want to consider getting a new pump because any damage can be causing foaming issues.

Here are five methods for getting rid of that pesky foam.


1. Vacuum It Out

One of the easiest ways to get rid of pool foam is to vacuum it out. Attach a standard vacuum head to your skimmer and run the pool pump for 10 minutes before turning it off and removing the vacuum head. Remove as much foam as possible. Run the pool pump again, turn it off and remove any remaining bits of foam with a brush or broom.

2. Add Algaecide

If you don’t want to use a vacuum, adding algaecide can help dissolve the foam naturally over time without harming your pool’s filtration system. The algaecide should take effect within 48 hours if there is not too much foam in your pool.

3. Run the Pool Pump

If you don’t mind running your pool pump 24 hours a day, this is an option for you. The constant circulation of the water will help break down foam naturally in most cases. Keep in mind that if there is too much foam, this could put excess wear and tear on your filtration system.

4. Clean Your Filter Cartridge Regularly

Using a cartridge filter when cleaning your pool is highly recommended to remove any particles before they reach your filtration system. Extra attention to cleaning this component can prevent excessive foaming caused by large amounts of dirt getting into the pool through your skimmer line.

5 . Cover Your Pool When Not In Use​

pool cover

This method may be more practical during cold weather. If you can’t find a way to remove all the foam or don’t want to run your pool pumps 24 hours a day, simply cover it up when it’s not in use during cooler months. This will prevent any extra evaporation from causing excess foaming, as well as help, keep leaves and other potentially harmful debris from falling into the pool.

Foaming is a common issue in many pools and it can be difficult to get rid of. However, there are some simple steps you can take to solve the problem.

If your pool has too much sanitizer or not enough chlorine, this could cause problems with foaming up because these chemicals create gas when they mix together. Run your pump for 10 minutes before turning off the power so that any foam will have time to break down naturally over 48 hours if possible.

You may also want to add algaecide into the water which will help dissolve any excess soap from creating more bubbles in your pool – just make sure that you don’t use too much!

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