As we dive further into August and pool season reaches its peak in the Mid-South, many pool owners are grappling with a common and frustrating issue: green pools. The primary culprit behind this unsightly problem is often high levels of phosphates. In this article, we’ll explore how phosphates contribute to algae growth, the issues they cause, and how to manage them effectively.
What Are Phosphates?
Phosphates are chemical compounds containing phosphorus, a nutrient essential for plant growth. In the context of swimming pools, phosphates can enter the water from various sources, but the most common source we see is city tap water. Many city water treatment plants add phosphonic acid to the tap water because it creates a coating in the steel water mains that helps prevent rusting. Unfortunately, this also serves as a food source for algae.
Other potential sources include:
- Lawn fertilizers: Runoff from nearby lawns and gardens can introduce phosphates into your pool
- Decaying organic matter: Leaves, grass clippings, and insects can break down and release phosphates into the pool water
- Rainwater runoff: Rain can wash phosphates from surrounding areas into your pool
- Detergents and soaps: Residue from soaps and detergents used around the pool area can find its way into the water
How Do Phosphates Affect Your Pool?
Phosphates serve as a food source for algae, which means high phosphate levels can lead to rapid algae growth. Algae not only turns your pool green but also makes the water cloudy and can create slippery surfaces, posing safety hazards.
Key Problems Caused by High Phosphates:
- Algae blooms: High phosphate levels can trigger and sustain algae blooms, turning your pool water green and murky
- Increased chemical usage: Combatting algae requires more pool chemicals, leading to higher maintenance costs
- Filter clogging: Algae can clog pool filters, reducing their efficiency and increasing the need for frequent cleaning
- Unpleasant swimming conditions: Algae-infested water is unappealing and can deter swimmers, defeating the purpose of having a pool
How to Manage Phosphate Levels
While we don’t worry about phosphate levels until they exceed 500 ppb (parts per billion), it’s best to use a preventative measure regularly. Managing phosphate levels is crucial for maintaining a clear and healthy pool. Here are some steps you can take:
- Regular testing: Test your pool water regularly for phosphate levels using a reliable test kit. Aim to keep phosphates below 500 ppb
- Clean pool surroundings: Keep the area around your pool clean to minimize the introduction of organic matter. Regularly skim the surface and vacuum the pool to remove debris
- Proper pool chemistry: Maintain balanced pool chemistry. Proper levels of chlorine and other sanitizers help prevent algae growth
- Phosphate removers: Use a phosphate remover as part of your regular pool maintenance routine. These products bind with phosphates and help remove them from the water
- Control Runoff: Ensure proper drainage around your pool to minimize the introduction of phosphates from rainwater runoff
High phosphate levels can turn your pool into a breeding ground for algae, leading to a range of problems that can spoil your swimming season. By understanding the sources of phosphates and taking proactive steps to manage their levels, you can enjoy a clear, sparkling pool all summer long.
For more tips on maintaining your pool and keeping it algae-free, feel free to reach out to us at Memphis Pool. We’re here to help you make the most of your pool season!
If you have any specific questions or need professional assistance with your pool maintenance, contact us today. Our team of experts is ready to help you tackle any pool problem with ease.
