There are times that even with your best efforts, algae can take hold in your swimming pool. The reason might be that the phosphate levels in your swimming pool water are not in balance. Phosphates are naturally-occurring nutrients that increase plant growth and because algae is a plant, there are times, when your pool may fall victim to its growth.

Where are phosphates found?

If your swimming pool is close to trees and other organic plant life, phosphates from dead and decaying organics can upset the chemical balance in your swimming pool. Lawn fertilizer can also be a culprit as these organics can become windborne and get deposited into your swimming pool. When you have a combination of fertilizer, bugs, leaves, pollen or other items that may decay in the water, they can be sucked into the filter and eventually break down into phosphates. In addition, cells, laundry detergents and perfumes and oil can break down and lead to the growth of phosphates in the water.

Ways to remove phosphates from your pool water

Before your swimming pool builder will do anything to address phosphates in the water, he will first test it to determine the levels in the water. Following a test, he will add a product to remove the phosphates – be advised that this could turn your water cloudy while it’s working. After the product has been added, he will monitor the pressure of your pool filter and adjust as necessary. The process to bring phosphate levels in balance may take several attempts to bring it back to less than 100 ppb.

What steps are necessary to keep phosphates from building up?

As a regular course of maintenance to your swimming pool, your swimming pool service professional will check the phosphates on at least a monthly basis to make certain the levels stay lower than 100ppb. He may add a phosphate prevention solution to the water to make certain the levels don’t build up and lead to algae growth.

Working with a qualified swimming pool service will help keep your water clean and clear and always swimmable. Additionally, to help keep your water free of organic materials, you may want to consider using a swimming pool cover.

Category: Pool Advice