Foamy pool: what causes it and how do you solve them?

Foamy pool: what causes them and how do you solve them?

It takes more than simply maintenance and labor to own a pool. Sadly, despite a regular cleaning routine, issues like the development of pool foam occasionally arise. Although little ones can find it amusing, however, pool foam is not a good idea. Perhaps you're wondering why the water in your pool is foaming. It happens! Thus, you don't need to be alarmed.

What is pool foam?

Sometimes, it is possible for some swimming pools to develop foam that sits on the surface of the water. It could initially appear to be nothing more than air bubbles in your pool. However, pool foam contains more than merely air.

Foam usually indicates that the water in your pool contains a high level of organic matter. Or, more organic material than a sanitizer can get rid of or can dissolve in water. As a result, the water becomes thicker. This "thickness" of the pool water can be brought on by a number of different things, some of which are merely due to a chemical imbalance.

What causes pool foam?

Pool foam can develop in your pool for a number of reasons, including chemical imbalances, the use of shampoo or other personal care products, and an excessive number of swimmers at once, or has insufficient water filtering.

Consequently, there are numerous reasons why pool surfaces can become foamy. Several things can cause the water in a pool to bubble up on top of itself.

Water, air, and surfactants are the main components of pool foam. Although none of these substances by itself constitute a risk, when combined with other wastes, they produce the foam, which is where the issue arose. Surfactants are naturally sticky molecules that reduce the surface tension of liquids and make it simpler for compounds that resemble oils to blend with water.

Personal hygiene and other related products

After taking a shower, you probably still have some shampoo, conditioner, body wash, etc. on you if you jump in the pool. These things may combine with the water in your pool and result in pool foam. Other substances including laundry detergent, deodorant, cosmetics, lotion, moisturizer, body spray, and sunscreen can also cause pool foam if they combine with the water in the pool. Additionally, whatever the body might lose or discharge can contribute to foaming problems.

To make sure you remove all the impurities from the water and get it back to normal, shock your pool—possibly even twice. You might also consider restricting the amount of swimmers in your pool, or at the very least, ensure that everyone cleans up before swimming by taking a shower or rinsing off. If it'd rather, you can use chlorine-free shock, although you might not obtain the greatest results.

Shock your pool

Loads of bathers

Numerous people are swimming in a pool at once. More perspiration, detergents, urine, and oils will enter your pool's water as more people use it, increasing the likelihood that pool foam will develop.

In light of this, many public pools have occupancy restrictions in place for the pool area. The sanitizers might easily become overworked in a pool with an excessive number of swimmers.

To fix this issue, it is much the same as above. To make sure you get rid of all the impurities in the water, shock your pool, perhaps even with a double dose. You might also think about putting a cap on the number of swimmers you allow in your pool, or at the very least, make sure everyone washes off or, even better, takes a shower before swimming.

Chemical imbalance

Several things can cause pool foam or froth. Calcium levels in the water may be too low, levels of polymer-based chemicals (also known as algaecides) may be too high, or an air leak in the pool's system may exist. Even a combination of these possibilities is possible.

Chemical levels rarely result in significant foaming. These chemicals may cause some thin froth, but the issue can generally be resolved by trying a different brand of algaecides. For instance, better ones might produce less foaming. Adding chlorine shock to the pool can assist to immediately reduce foam.

If that doesn't fix the problem, a calcium deficiency may be to blame. Pool owners can enhance calcium hardness if the water's calcium content is insufficient to prevent foam from growing or developing.

Your pool's chemicals are there to stop foaming from happening. You can wind up with a case of pool foam if things go out of hand, especially with your sanitizer. Regular maintenance procedures that include water testing and maintaining the proper chemical levels should be sufficient to prevent foam from forming. Top off your chemicals with below recommended proper levels:

  • Alkalinity. It is best to stay within a range of 100 and 150 parts per million (ppm), with 125 ppm being the ideal level..
  • pH level. 7.4 to 7.6 is the recommended range, with 7.5 being the best value.
  • Calcium hardness. It should be between 175 – 275 parts per million
  • Salt: 2,700-3,400
  • Bromine: 3–5 parts per million
  • Free chlorine level” 2 – 3 parts per million
Ensure alkalinity is within range Checking your pool pH level

How to get rid of pool foam

All present treatments require time. Days may pass before you see a difference. You can try shocking your pool with chlorine and then leaving its pump going until the foam subsides, if your pool still has foam in it after dealing with all the aforementioned reasons and solutions with your chemical balance.

When you shock a pool, you chlorinate the water to make it clean. By using this method, pollutants, bacteria, and muddy waters are eliminated. Additionally, it stops ammonia as well as living things like algae from taking over your pool.

The last thing I suggest doing to get rid of foam in your pool is using anti-foam chemicals. Pool foam is specifically eliminated by anti-foaming chemicals without impacting the other chemicals in your pool.


Pool foam isn't a major issue. It's simple to prevent and even simpler to treat! Simply take a shower before diving into the pool, and if foam begins to form, shock the water. Pool foam shouldn't be an issue as long as you purchase the finest chemicals from a trustworthy supplier.  When using algaecide, try to stick as closely as possible to the suggested dosage; if you experience foaming after applying it, make a note of the amount you used and attempt to lower it the following time. You may be certain that you'll never experience that bothersome foam again by keeping the chemical balance of your pool.