How to Clean a Pool Filter Cartridge

How to Clean a Pool Filter Cartridge: Easy, Quick Tips

Having a clean and well-maintained pool is essential for enjoying a refreshing swim during the summer months. One crucial component of pool maintenance is keeping the pool filter cartridge clean. A dirty or clogged filter can hinder the filtration process and lead to cloudy water or even algae growth. In this article, we will guide you through the steps of cleaning a pool filter cartridge effectively.

Step 1: Turn off the Pool Pump

Before starting the cleaning process, it is crucial to turn off the pool pump. This step ensures your safety and prevents any potential damage to the pool filter cartridge. Locate the pool pump switch and turn it off.

How to Clean a Pool Filter Cartridge: Easy, Quick Tips


Step 2: Remove the Pool Filter Cartridge

Once the pool pump is turned off, it’s time to remove the pool filter cartridge for cleaning. Open the filter tank by unscrewing the lock ring or removing the clamp, depending on the type of filter you have. Carefully lift out the cartridge from the filter tank and place it on a clean surface.

Step 3: Rinse the Cartridge

Using a garden hose, thoroughly rinse the pool filter cartridge to remove any loose debris or dirt. Start from the top and work your way down, ensuring that all the pleats are cleaned. Avoid using a high-pressure nozzle as it may damage the delicate filter material.

How to Clean a Pool Filter Cartridge: Easy, Quick Tips


Step 4: Prepare a Cleaning Solution

Fill a large bucket or container with water and add a filter cleaning solution. You can purchase a specific pool filter cartridge cleaner from a pool supply store or make your own solution using a mixture of water and muriatic acid. Follow the instructions provided on the cleaner or acid bottle for the correct dilution ratio.

Step 5: Soak the Cartridge

Submerge the pool filter cartridge in the cleaning solution and let it soak for at least 6-8 hours or overnight. This soaking process helps to break down any built-up oils, minerals, or debris that may be trapped in the filter. Ensure that the cartridge is fully covered by the solution.

Step 6: Scrub the Cartridge

After the soaking period, take a soft-bristled brush and gently scrub the pool filter cartridge. Pay attention to the pleats and remove any stubborn dirt or debris. Avoid using a wire brush or any abrasive materials as they can damage the filter material.

Step 7: Rinse the Cartridge Again

Once you have finished scrubbing, rinse the pool filter cartridge thoroughly with a garden hose. Make sure to remove all traces of the cleaning solution and any remaining dirt. Rinse from the top down, ensuring that all the pleats are cleaned.

Step 8: Inspect the Cartridge

Take a close look at the pool filter cartridge to inspect for any signs of damage or wear. Check for tears, holes, or worn-out pleats. If you notice any significant damage, it may be time to replace the cartridge with a new one.

Step 9: Reinstall the Cartridge

Once the pool filter cartridge is thoroughly cleaned and inspected, it’s time to reinstall it back into the filter tank. Place the cartridge carefully in the correct orientation and ensure that it fits snugly. Use the lock ring or clamp to secure the filter tank and prevent any leaks.

Step 10: Turn on the Pool Pump

With the pool filter cartridge properly installed, it’s time to turn on the pool pump. Allow the pump to run for a few minutes to ensure that everything is working correctly. Check for any leaks and make sure the water is flowing smoothly.

Step 11: Regular Maintenance

To keep your pool filter cartridge in optimal condition, it’s essential to perform regular maintenance. Depending on the size of your pool and the usage, cleaning the cartridge every 4-8 weeks is recommended. Additionally, monitor the pressure gauge on your filter system and clean the cartridge when the pressure rises by 8-10 psi from the clean pressure.


Cleaning your pool filter cartridge is a vital part of pool maintenance and ensures that your pool water remains clean and clear. By following these simple steps, you can effectively clean your pool filter cartridge and keep your pool in pristine condition. Remember to turn off the pool pump, remove the cartridge, rinse, soak, scrub, and inspect before reinstalling. With regular maintenance, you can enjoy a sparkling clean pool all summer long!

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