how to change sand in your pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

If you own a swimming pool, you know the importance of maintaining it properly. One of the essential components that need regular maintenance is the pool filter, which requires changing the sand occasionally. Over time, the sand in the pool filter becomes clogged with dirt, debris, and other contaminants, which makes the filter less efficient. Changing the sand helps to keep your pool water clear and sparkling. Here are the steps to change the sand in your pool filter.

Preparing for the Job

Before beginning the task, gather all the necessary supplies, including safety goggles, screwdriver or pliers, new filter sand, a bucket, and a garden hose. Turn off the pool pump to prevent water from flowing through the filter during the process. If you have a multiport valve, set it to the backwash position and let the water run through the filter for a few minutes to remove any excess debris.

Draining the Filter

Next, disconnect the plumbing from the top of the filter. If you have a top-mount valve, remove the valve and laterals from the top of the filter. If you have a side-mount valve, unscrew the nut that holds the valve in place. Next, carefully lift the filter and pour out the old sand into a bucket. If the sand is very dirty or deteriorated, you may need to use a shop vac to remove as much sand as possible.

Cleaning the Filter

Once you have removed all of the old sand, rinse the inside of the tank thoroughly. Next, use a hose to wash out the laterals or fingers, which are the plastic components inside the filter that help to distribute the water evenly. Check for cracks, breaks, or other damage to the laterals or fingers, as they may need to be replaced if they are damaged.

Replacing the Sand

Once the filter is clean, add the new sand to the filter. Make sure to fill the filter about halfway with water before adding the sand. This helps to prevent the laterals or fingers from shifting when you add the sand. Carefully pour the new sand into the filter, making sure not to dump it all quickly into the filter. Once the filter is filled, replace the laterals or fingers and the valve.

Finishing Up

Once the filter is reassembled, turn on the pump and let the water run through the filter for a few minutes to remove any remaining debris. Check for leaks or other issues and make any necessary repairs. Set the pool pump to filter mode, and you’re ready to enjoy clean and clear pool water!

Tips for Success

Changing the sand in your pool filter is a simple task, but it can be messy, so be prepared with old towels, a broom, and a dustpan. Wear safety goggles and gloves to protect your eyes and skin from the sand and debris. It's also important to choose the right type of sand for your filter. Consult the manual or the manufacturer to ensure you're using the correct sand.


Changing the sand in your pool filter is a crucial step in keeping your pool water clean and clear. With a few tools and supplies, you can easily perform this task yourself. Don't forget to follow all safety precautions and consult the manual before starting. With proper maintenance, your pool filter will continue to operate efficiently and provide you with long-lasting enjoyment all summer long.


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