Algaecide Foam - How To Get Rid Of It?

How To Get Rid Of Algaecide Foam?

Foam forming on the surface of your pool is an unfortunate yet fairly common occurrence when using algaecide products. Although white foam on top of your pool is often expected in these cases, it can be a nuisance, and may give your pool an unsanitary appearance.

In this article we will talk about the causes of algaecide foam and ways that you can remove this algaecide foam from your pool.

Causes of Algaecide Foam

Most algaecides contain surfactants, or chemicals with properties that decrease the surface tension of water. These aid in the cleaning process, but are also commonly found in soaps because they work to produce bubbles. Water agitation caused by your pump activity then leads to the white foam that you see.

Additionally, as micro-organisms like algae and bacteria die off in your pool water, they may release carbon dioxide and other gases. Sometimes, when a large amount dies off at once, this can also produce tiny bubbles in your pool, adding to the foam effect.

How to Remove Algaecide Foam

The good news is that any foam in your pool caused by the use of algaecide products will go away on its own as your algaecide dissipates and activates in your pool water. This can take up to a week at most, but is often resolved sooner through normal pump and filter operation.

If you want to remove algaecide foam from your pool faster, the best way to do this is to use a dip net to scoop out large quantities of the white foam. Although this can be time consuming, it’s a more proactive approach to getting rid of your foam problem than just waiting around.

You can also use your hose with a spray head over the foam to help break it up. For a more permanent solution, you can even set up a water sprinkler poolside that can keep breaking up the foam for you. This is what many industrial sites use to clear up foam they get on their water ponds.


Algaecide foam is a common and even expected occurrence. Even so, many pool owners get frustrated by the white foam on top of their pools for its unsanitary appearance. Thankfully, algaecide foam resolves on its own as the product dissipates in your pool water.

In future, make sure that you dosing the correct amount of algaecide by using the pool algaecide calculator beforehand. As you are aware by now, too much algaecide can be problematic.

Do you have any questions about algaecide foam or how to remove it? Leave us a comment down below!

Louis from Pool Advisor


A chemical engineer by trade, Louis is committed to debunking myths in the pool industry by explaining the underlying chemistry and making it accessible to all.