How to Lower Phosphate Levels in Pool?

Does your pool water look green and cloudy?

If so, you can expect some unwanted and harmful guests residing in your pool in the form of algae.

But another question arises here. Which factor is responsible for the algae bloom in the pool?

Due to the abnormal raise of phosphate levels in the pool, algae gets the power to form and grow rapidly. As a consequence, this algae seriously affects the quality of your pool water and causes health issues to the swimmers.

Now another important query, is it essential to remove phosphates completely from the pool?

No, because a certain level of phosphates might help soften pool water and improve water quality. Therefore you need to maintain a balanced pool water chemistry so that you can prevent a number of problems including algae formation.

In this article, we are going to guide you on how to lower phosphate levels in the pool and provide you other important information associated with it.

How to Lower Phosphate Levels in Pool

What Are Phosphates at a Glimpse

To answer simply, phosphates are nothing but chemical compounds that have phosphorus. This is a non-metal and naturally occurring element. Besides phosphorus, phosphates may contain hydrogen, oxygen, and other chemicals as well.

Phosphates are common but the most important elements on which every life depends(human, animal and plant). A survey conducted by the micronutrient research center based in Oregon State University shows that healthy adults can take 700 mg of phosphorus per day. But intaking more than 4000 mg per day can be very dangerous to health.

So what is the summary?

In short, we need phosphates but must be careful about overloading.

Is It a Wise Decision to Remove the Phosphates Completely from the Pool Water?

You can remove  the entire phosphates from your pool. But honestly say, it is not ideal at all for maintaining the quality of the pool water. You need to keep the expected phosphate levels to ensure the quality of the pool water.

But you have to make sure that phosphate levels must not be so high as they can help algae and other bacteria form. So in this stage, it would be best to know how to reduce phosphate levels from your pool.

Steps Required to Lower Phosphate Levels in Pool

You have to follow some steps to lower phosphate levels without being panicked. Following these steps, you can help your pool water to get back its previous nice and attractive look.

Let’s get started.

Testing Your Pool Water

Before taking any steps, at first, test the levels of phosphates of your pool to know whether they are really dangerous for you. Testing the phosphate level has become a piece of cake nowadays.

You can buy a testing kit or go to a nearby pool supply store with a sample of your pool water. If phosphates level reaches 1000 ppb (parts per billion), it demands your consideration to use phosphate reducers to lower the high level.

Using of Phosphate Reducers

Pool owners have been using phosphates remover for removing phosphates immediately from pool water  for a number of years. They basically contain lanthanum or salts of aluminum. After adding to the water, they start to produce insoluble phosphate compounds which get removed by vacuuming or filtering.

You can use PHOSfree, a phosphate removing product mostly available in almost all the pool stores. You may notice a surprising milky white color after using it. But don’t be unstable. It will disappear when it completes its circulation through the pool.

After finishing the circulation that may take an hour, you can swim happily in your favorite pool. Because phosphates removers are basically safe and non-harsh chemicals. 

You will require 1.5 liters of dosage per ten thousand gallons of pool water if your pool’s 

Phosphate levels are 1000 ppb.

Adding Calcium

By adding calcium you can reduce the amount of phosphates and prevent the growth of algae in the pool.. Calcium  is a positive ion generally binds with phosphates( a negative ion) and decreases its levels to a significant amount. The adding amount depends on the size of your pool.

It is a clear indication that having not enough calcium presence in pool water increases the probability of high phosphate levels.

If you fail to do so, the increased phosphates will reduce the chlorine level as well and consequently make your pool maintenance expensive and difficult.

Checking the Filter of Your Pool

Pool filter is capable of  catching leaves, algae, debris, etc. but is unable to remove phosphates. You can rest assured by replacing or cleaning the filter and make sure there are no phosphates available in it.

Skimming Your Pool Water

bugs, twigs, leaves, and other debris can boost the levels of phosphate. So you should immediately remove them with a skimmer. Also, be careful when reusing it. Because there might be residual phosphate on it. You can consider using some PHOSfree before and after use of the skimmer.

Vacuuming the Pool

Some organic matter may sink to the bottom of the pool. So vacuum the floor and walls to  ensure that you don’t miss them.


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Reasons Behind High-Level Phosphates in Pool

It is a fact that phosphates can constantly enter your pool in different ways.

But how?

Dirt, leaves, twigs, fertilizer, cosmetic items, and even some pool chemicals can release phosphates in the pool water significantly.

Let me show you some of the ways below:

  • Putting fresh water into your pool can invite the danger of raising phosphate levels
  • Having the scope of entering twigs, debris, leaves, bark in the pool water
  • Falling dirt into pool water due to the wind
  • Mixing with pesticides or fertilizers through runoff
  • Cleaning the pool with phosphorus-based cleaners

So, now you can see you might always have the presence of phosphates in your pool water. So don’t be upset. Rather you should be glad to know that some phosphates are effective enough to remove mineral deposits and stains. Hence they have some merits too.

But remember, they must be kept near zero position.

Final Thought

Maintaining the quality of your pool water chemistry is a surefire way to make it an excellent-looking pool. In case of skyrocketing phosphate levels to an alarming level, simply follow the methods discussed above on how to lower phosphate levels in the pool.

In my last opinion, I would highly focus on doing three important things- checking your pool water regularly, sanitizing, and algaecide. By doing so, rest assured your pool will be always attractive and in good condition.

Be safe and keep everyone safe.

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