5 Effective Ways to Treat and Prevent Green Water

Swimming in backyard swimming pools is a great way to socialize, exercise, and relax—as long as it stays clean.  One of the most common challenges swimming pool owners face is green water.

In most cases, the green color comes from green algae present in the swimming pool and/or spa.  This may be caused by proper maintenance, rainy weather, varying winds… But it doesn’t really matter how the water turned green—what matters is taking action.  Try to incorporate one or more of these 5 effective ways of removing that horrible green algae and preventing it from returning to your swimming pool:


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Generally speaking, a good granular shock treatment should get rid of the green in swimming pool water because it acts fast.  When choosing the product, it's important to take a close look at the percentage of chlorine in it.  A higher percentage of chlorine usually means the treatment will take effect in your swimming pool or spa more quickly.
While many homeowners might rush to use shock and similar chemicals to turn the water in their swimming pools from green and back to blue, this will only solve the problem in the short-term without proper water circulation.  Hence, we recommend homeowners run their pool and spa equipment all throughout the summer season.  This will help keep green algae at bay in the weeks or months families regularly use their backyard swimming pools.

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In the process of cleansing swimming pool water - clearing it of all the green algae build-up - water clarifiers are great supplements.  Water clarifiers help accelerate the cleansing process and usually make the effects of the treatment last longer.  It is extremely important to keep all swimming pool and spa equipment running during this process for best chances of success.
A strong filtration system will keep your swimming pool water cleaner longer.  To keep your filter working properly make sure you clean and maintain it regularly.  Visit our Maintenance Tips page to learn more about how you can do this yourself!  Just keep in mind that a filter cannot be over-washed.

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Unfortunately, green algae is not the only contaminant that can turn swimming pool water green.  Leaves, insects, and debris can also pollute a swimming pool or spa, causing the water to appear unclean and discolored.  Homeowners who prefer to skim their backyard pools themselves can visit our Maintenance Tips page for our cleaning recommendations.  Otherwise, a hired cleaning service should remove all contaminants once or twice each week.

If you think you want to work with California Pools for your next backyard project, contact us for a free consultation!  You can reach us by phone at (800) 282-7665 or submit your information online anytime to schedule an appointment with the California Pools office nearest you.