How to Get Rid of Mustard Algae in a Pool

how to get rid - of mustard algae

Mustard algae have the tendency for attaching itself to the walls of the pool and other products. They can cling on the floats, toys, equipment and the bathing suits of the pool.

The mustard algae, present in the swimming pool, can be detrimental to your health. They are found in almost all types of pool, where the level of chlorine is lower and the temperature of the water is good.

They are capable of infecting even those pools which are maintained in a meticulous manner, with the prerequisite balance of well-filtered water, sanitizer levels and balance of water.

They are known for having a resistance against the normalized level of chlorine. They tend to return again if it is not killed in a complete manner.

Here are some tips that will help you in getting rid of the mustard algae, present in the pool:

Testing the water

It is a prerequisite to test the pool of the water on a regular basis with the test strips for ensuring that the alkalinity and pH are in the prerequisite range. The right pH level for the water of the pool is known to be 7.5.

However, it is ideal if the pH level is within the range of 7.4 – 7.6. The alkalinity of the pool should be in the range of eighty to one hundred and forty ppm. The algae are known to survive in water, having higher pH levels.

Hence, it is recommended to lower the level of the same for the prevention of mustard algae. For bringing a reduction in the pH level of the water of the swimming pool, you will be adding sodium bi-sulfate, muriatic acid.

The alkalinity, present in the pool is interlinked with the pH level directly. Thus, with the stabilization of the pH level of water, alkalinity is going to follow.

Ensuring that the surface of the pool is clean

There is a wide assortment of automated pool cleaners in the market. The robotic pool cleaners are a suitable option as it will be scrubbing the tile lines as well as the surface.

They are also effective in keeping the swimming pool brushed as well as free from the debris. It is regarded as the best ever cleaner for the removal of mustard algae as it plays an indispensable role in order to pick up the silty and fine debris.

Shocking the pool on a weekly basis

Shocking the pool with the aid of pool shock is actually super chlorinating the swimming pool. It is a perfect way of getting rid of those unwanted organisms on a regular basis.

They are also helpful for the prevention of algae from blooming. You can find a wide array of products in the market. The best thing about them is you can use them at ease.

Apart from this, they are available at the least cut off from the pocket. All you need to do is following the instructions, give in the manual and use the same every week.

Disinfecting the different pool accessories

It is recommended to wash each and every apparel, wearing which you have made an entry into the pool. You should also be rinsing each and every pool accessory and wipe them with the aid of chlorine based solution.

It is certainly a vital step as these algae have the tendency to attach themselves to swimsuits and pool toys and get deposited in the water.

Vacuuming the pool

Vacuuming the pool for waste indicated that you are going to divert the water of the swimming pool to the waste line with an eye to bypassing the cartridges and filters.

This is certainly a wonderful step as the algae will be attaching to the pool filter rids and cleaners. Thus, the removal of this mustard algae from the pool can be challenging.

Brushing the pool

The mustard algae, need some form of heavy duty scrubbing as they are resistant to chlorine. Hence, you should make sure to have the pool brush.

You need to ensure to scrub the total surface of the swimming pool thoroughly. In addition to this, you require scrubbing under the steps, around the seals and gaskets.

Cleaning the filters

If you find that mustard algae have been accumulating over the filter media, it is time to scrub the same. In case you possess D.E. filters or sand filters, you should ensure to backwash them.

Moving the pool equipment to the end

You need to collect all the maintenance equipment which are inclusive of poles and hoses and then place the same in the shallower part of the pool.

In case you have something on the hand which has been infected by the mustard algae, you should make sure to add the same to the pool as well.

Consolidating the gear in the pool makes it really easy to disinfectant each and everything while shocking the swimming pool for the objective of sanitizing.

Triple shocking the pool

Mustard algae are known to become susceptible to the cleansing of pool shock, primarily at the higher concentration. You can make use of the 3 pounds of pool shock for each ten thousand gallons of water of the swimming pool.

For maximizing the efficiency of the shock, you should be adding the same to the pool at night or during the dusk. You require leaving the filter after which you need to keep the pump running for the whole day till the algae die.

It is recommended to make an adjustment in the chlorine level to ensure the maximum killing of the mustard algae, present in the pool.


In order to prevent the growth of the algae, you should make sure to keep the sanitizer level, alkalinity level and the pH level in the prerequisite range at each and every time.

You should be running the pump as well as filter daily for the time session of eight to twelve hours on a daily basis.

You should make sure to keep the swimming pool with the aid of brushing as well as vacuuming on an extensive scale.

I am Nicholas Stanley a swimming pool enthusiast with more than 22+ years of swimming pool construction and maintenance in corporate, residence and spa. I have initiated this website Pools point to share my experience by trustworthy product reviews, pool related how-to guides, DIY tips ans tricks to maintain the pool. I want my readers and customers to be aware of all the technicalities of pool and pool related equipment's.


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