How to Remove Foam from Hot Tub

Are you annoyed by the foam that has formed on top of your hot tub water? If so, then don’t fret over it too much, as it is a common problem. Foam can form in hot tubs due to many different things, such as sweat, body oils, and bubble baths being deposited into the water each time someone takes a dip. 

How to Remove Foam from Hot Tub

Fortunately, there are several easy ways to get rid of this yucky foam quickly and effectively so that you can start enjoying your hot tub once again!

In this blog post, we will discuss why foam forms in the first place and some simple steps for how to remove foam from hot tub. So grab your bathing suit, and let’s dive right into understanding how to keep those pesky bubbles at bay!

Why Is There Too Much Foam in My Hot Tub?

There are a few possible reasons why there is too much foam in your hot tub. One of the most common culprits is excessive use of bubble baths, soap, or body wash, which can create excess suds in the water.

Other causes could include insufficient filtration, high pH levels, and low alkalinity. Poor water circulation can also lead to foam buildup, as can the presence of organic matter, such as oils and lotions, that accumulate in the water.

In any case, too much foam is unsightly, uncomfortable, and potentially hazardous, as it could clog filters or reduce the effectiveness of your hot tub’s chemical treatment systems. Fortunately, there are a few steps you can take to reduce the foam and get your hot tub back in shape.

The first thing is to adjust the pH level of the water. The ideal range for a hot tub falls between 7.4 and 7.6, so you may need to add some pH decrease or sodium bicarbonate if necessary. You should also test the alkalinity and adjust it accordingly if needed.

Next, you should clean or replace the filters. A dirty filter can cause poor water circulation and encourage foam buildup. If your filter is worn out or clogged up with debris, replacing it could help get rid of the foam in your hot tub significantly.

Finally, you can add a chemical foam reducer to your hot tub water. These products are designed specifically to target and get rid of foam, and they work quickly to restore your hot tub back to its normal level of clarity. Be sure to follow the instructions on the product packaging, as overusing these products can cause problems in your water chemistry.

9 Methods on How to Remove Foam from Hot Tub

1. Use a Foam Reducer

One of the easiest ways to remove foam from your hot tub is to use a foam reducer. Foam reducers are chemicals that help to break down the bubbles that cause foam. You can find foam reducers at the most pool and spa supply stores. Make sure to carefully read and follow the directions on the product before use. If you have any questions, it’s best to ask a professional.

2. Use a Skimmer

Another easy way to remove foam from your hot tub is to use a skimmer. A skimmer is a tool that helps to collect debris from the surface of the water. It is a great help in preventing foam from forming in the first place by removing the organic matter that often causes it.

To use a skimmer, simply dip it into the water, skim the foam off, and discard it in a trash can.

Sure to Use a Skimmer

Make sure to use a skimmer with a long handle so that you don’t have to get into the water to remove the foam. When using a skimmer, be sure to move slowly and carefully so that you don’t stir up any more foam in the process. Continue skimming until all of the foam has been removed from the hot tub.

3. Use a Sponge

If you do not have a skimmer, you can also use a sponge to remove foam from your hot tub. Start by soaking the sponge in your hot tub water. Then, place it on the foam and let it sit for a few minutes to absorb some of the foam.

After it has soaked, you can move the sponge around in different directions to scoop up the foam and remove it from the surface of your hot tub.

Be sure to continue to replace the sponge with fresh water as needed and remove any foam that has been collected in it.

When you are finished, discard the sponge and foam in a trash can away from your hot tub. This method is not as effective as using a skimmer, but it will help to reduce the amount of foam in your hot tub.

4. Use a Vacuum

Can Use a Shop Vac

Another effective way to remove foam from your hot tub is to use a vacuum. Vacuums are designed to suck up debris from the bottom of the tub. You can use a shop vac or a wet/dry vacuum to do the job. Make sure that you attach the correct size nozzle for your vacuum and follow the manufacturer’s instructions.

When using a vacuum, make sure to move slowly and methodically around the hot tub in order to remove as much of the foam as possible. Use caution when vacuuming near any electrical components, and be sure to keep the vacuum a safe distance away from the filter and skimmer.

5. Use an Air Blower

An air blower is another tool that can be used to remove foam from your hot tub. Air blowers work by blowing air across the surface of the water, which breaks up the bubbles that cause foam. You can find air blowers at the most pool and spa supply stores.

Make sure to read the instructions before using an air blower, as they can cause damage to your hot tub if not used properly. Air blowers are generally very effective at removing foam from hot tubs.

6. Use a Brush

A brush can also be used to remove foam from your hot tub. Brushes help to break up the bubbles that cause foam and make it easier to skim off the surface of the water. Make sure you use a brush specifically designed for hot tubs and not one that would scratch the surface.

Depending on the severity of the foam buildup, you may need to use a brush before skimming the foam to ensure that all of it is removed. After using the brush, wait a few minutes before skimming away the remaining foam.

7. Use Hot Water

One simple way to remove foam from your hot tub is to add hot water to it. The heat from the hot water will help to break down the bubbles that cause foam. When using this method, be sure to add only enough hot water to dilute the foam and not too much. 

Adding too much hot water can cause the water level to rise, which can lead to problems with the jet system. To minimize any risk of damage, it is best to add hot water to the tub slowly and in small amounts. If you are unsure how much hot water is safe to add, consult your local pool or spa supply store for advice.

8. Use Cold Water

Adding Cold Water

Adding cold water to your hot tub is another effective way to remove the foam. The cold water will help to break down the bubbles that cause foam and make it easier to skim off the surface of the water. To do this, turn off your hot tub pump and fill the tub with cold water. 

Make sure to add enough cold water so that it can effectively break down the foam. Once all of the bubbles have been broken up, you can use your skimmer to remove them from the surface of the water. Afterward, you can turn the pump back on and enjoy your clean hot tub.

9. Try Baking Soda  

Baking soda can also be used to remove foamy residue in your Jacuzzi. To do this, mix 1 part baking soda with two parts warm water until dissolved, then pour into Jacuzzi while the jets are turned off. 

Let sit for 15-20 minutes, then turn the jets back on for 5 minutes, then drain. Repeat as necessary until desired results have been achieved. Baking soda is a natural product and will not harm your tub or the environment. However, it may take multiple applications to get rid of all foam.

Baking Soda Can Also Be Used


Most people don’t know how to remove foam from their hot tubs. However, it’s actually a pretty easy process. All you need is some dish soap and a little bit of time. Simply add the dish soap to your hot tub and let it run for a few minutes. 

The foam will start to dissipate, and you’ll be able to enjoy your hot tub again in no time! Thanks for reading our blog post on how to remove foam from hot tub! We hope you found it helpful and informative. Happy cleaning!

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