How to Fix Cloudy Green Pool Water
A pool, left unattended for even a short time, can become green and cloudy with overgrown algae, looking more like a pond than a pool. Oxidizing chemicals, such as chlorine, can help kill algae, which can then be filtered from the water. Known as "shock," this chemical treatment usually comes in packets of granules. When added to the water, the chemicals destroy algae cells. A flocculation agent, added after the shock treatment, helps make the dead cells and other particulate matter stick together to allow the filtration system to more easily remove them from the water. Does this Spark an idea?
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Instructions
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Backwash the filter system to remove and particulate matter from the filter. Clean or replace any cartridge filters and empty any skimmer or pump baskets. Turn on the main pump and verify the filtration system is circulating water properly.
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Add pool shock to the water in the appropriate amount for the number of gallons the pool holds. Run the filtration system for one to two days.
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Observe the pressure on your filtration system every few hours during this time. If the pressure rises above the manufacturer-recommended level, backwash or clean the filters to keep them clear and operating properly.
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Shock the pool each day during this time until the water is no longer green. At the end of this time, add a flocculation agent to clump the particles that are forming the cloudiness. This clumping action improves the ability of the filter to remove them from the water.
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Continue to run the filtration system until all of the particulate matter is removed and the water is clear.
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Add chlorine or other pool chemicals on a regular basis to maintain the clarity of the pool water.
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Tips & Warnings
Pool shock is a strong oxidizing agent that is caustic. To avoid chemical burns, handle this product with care.
References
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