Time To Check Your Pool Phosphate Level

Have you checked your pool’s phosphate levels lately?This time of year, many Arizona pools need phosphate removal - especially after dust storms, debris, or heavy pool use.

If you work with a professional pool service like Sunset Pool Care, your phosphate levels are already monitored as part of routine maintenance.But if you take care of your own pool, now’s the perfect time to test for phosphates and prevent future algae problems.

What Are Phosphates and Why Do They Matter?

Phosphates are organic nutrients found in water, and while they’re not toxic or harmful to swimmers, they’re a major food source for algae.

The higher your phosphate level, the easier it is for algae to bloom, even when your chlorine levels are normal.

That’s why keeping phosphate levels low is an important part of maintaining clear, balanced pool water.

What Causes Phosphates in Your Pool?

Phosphates enter pool water from everyday sources, including:

• Dust and dirt

• Leaves and grass clippings

• Sunscreen, lotions, and makeup

• Pet hair and dander

• Rainwater and fertilizers

They build up slowly over time, which means even a pool that looks clean can have a high phosphate reading.

When to Test for Phosphates

Pool owners don’t usually complain about phosphates being in their pool until their pool is green. But phosphates are always in your swimming pool, even when there are is no sign of algae.

It’s a good idea to test your phosphate levels:

• At the start of summer (before algae season)

• After storms or heavy pool use

• If your pool turns cloudy or green despite proper chlorine levels

How to Test for Phosphates

Testing for phosphates is simple. You can use:

• Phosphate test strips (available at pool stores)

• Powder test kits that dissolve in water and change color based on concentration

These tests are separate from your standard pool chemistry kits, so make sure you’re using one that specifically measures phosphates.

If your reading shows phosphates above 500 ppb (parts per billion), it’s time for treatment.

How to Remove Phosphates from Pool Water

Phosphate removers work by binding to the nutrients so they can be filtered out.

Add the recommended dose to your pool while the pump and filter are running, then clean or backwash your filter afterward to remove residue.

High phosphate levels may require multiple treatments, especially if your pool has visible algae growth.

Ready For A Pool Service Company?

Phosphates may not be dangerous, but they’re one of the biggest contributors to algae problems in Arizona pools. Regular testing and timely removal will keep your water crystal clear and your equipment running efficiently.

Keeping your pool balanced takes consistent testing and maintenance , but you don’t have to do it alone. At Sunset Pool Care, we monitor phosphate levels, balance water chemistry, and keep algae from ever getting a foothold.

Call 480-682-7986 or request service online. We’ll handle the chemistry so you can enjoy a clear, clean pool all summer long.

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