How to Change Pool Filter Sand: A Complete Guide for AQUASTRONG Pool Owners
Maintaining a clean and clear pool is key to enjoying your backyard oasis, and a well-functioning pool filter is essential to that process. If you use a sand filter for your pool, eventually, you'll need to replace the sand to keep your filter working efficiently. Whether you're new to pool maintenance or need a refresher, this guide will walk you through how to change pool filter sand effectively, ensuring your pool stays sparkling clean all season long.
What is Pool Filter Sand?
Pool filter sand plays a critical role in maintaining water clarity. It traps debris, algae, bacteria, and other contaminants that could make your pool water cloudy or unsafe. Typically, pool filter sand is made from silica, glass, or zeolite—each with its own benefits.
- Silica Sand: The most common type of pool filter sand, #20 silica sand is made from ground quartz and has jagged edges that trap debris efficiently.
- Glass Sand: This environmentally friendly alternative is made from 100% recycled glass. It provides superior filtration and helps capture smaller particles, even as small as 2 microns.
- Zeolite Sand: Derived from volcanic minerals, zeolite sand has a unique sponge-like structure that provides superior filtration and traps chloramines, reducing eye irritation in swimmers.
Why Change Your Pool Filter Sand?
Over time, your pool filter sand can lose its ability to capture contaminants effectively. The rough, jagged edges of the sand particles wear down with use, and the sand becomes smooth, which decreases its filtration efficiency. This can result in cloudy water, increased filter pressure, or even the need for frequent chemical treatments to maintain water quality.
Typically, pool filter sand needs to be replaced every three to five years, depending on usage and maintenance.
Signs It's Time to Change Your Pool Filter Sand
You may notice a few signs that your pool filter sand needs to be replaced:
- Cloudy Water: If your pool water is persistently cloudy despite regular maintenance, it could be a sign your filter is no longer capturing contaminants properly.
- High Filter Pressure: If the pressure gauge on your filter shows unusually high readings (10 psi or more above normal), it may indicate that the sand is clogged and needs replacement.
- Frequent Backwashing: If you find yourself backwashing your filter more often, it's likely due to the sand's reduced ability to trap particles effectively.
How to Change Your Pool Filter Sand: Step-by-Step
Follow these steps to replace your pool filter sand, ensuring the process is smooth and efficient.
1. Turn Off the Pump and Drain the Filter
Before starting, make sure the pump is turned off, and the system is disconnected from power. Then, drain the water from the filter tank by removing the drain plug. Let the filter empty completely before moving on.
2. Remove the Multiport Valve
The multiport valve controls the water flow through the filter. Disconnect the hoses or pipes attached to the valve. If the valve is hard-plumbed with PVC, you may need to cut the pipes. Carefully remove the valve from the tank by loosening any securing clamps.
3. Cover the Standpipe
Inside the tank, you'll find the standpipe, where water exits after being filtered. Cover it with duct tape to prevent sand from getting inside. This will help ensure the sand stays inside the filter during the replacement process.
4. Remove the Old Sand
Once the tank is empty, use a Shop-Vac or vacuum to remove the old sand. If you don't have a vacuum, you can scoop the sand out by hand, but this can be time-consuming.
5. Rinse Out the Tank and Laterals
With most of the sand removed, rinse the inside of the filter tank and the laterals (the arms that distribute water inside the tank). Use a garden hose to wash out any remaining debris. Carefully inspect the laterals for any cracks or damage that could cause issues later.
6. Add Water to the Tank
Before adding the new sand, replace the drain plug and fill the tank halfway with water. This will cushion the laterals and prevent damage when the new sand is added.
7. Add the New Sand
Choose the right type of pool filter sand for your needs. Wearing a chemical mask, carefully add the new sand to the tank. Pour slowly and make sure you don’t spill. Depending on your filter, you may need one or more bags of sand.
8. Reassemble the Filter and Connect the Hoses
Once the sand is in place, fill the tank to the top with water. Reinstall the multiport valve and reattach the hoses and pipes. Ensure all connections are secure to avoid leaks.
9. Backwash the Filter
Before starting the pump, attach the backwash hose to the filter. Set the multiport valve to "backwash" and run the pump for a few minutes. This will remove any residual dust and debris from the new sand.
10. Rinse and Run the Filter
Switch the multiport valve to "rinse" and run the pump for a minute to clear out any remaining particles. After that, set the valve back to "filter" and turn the pump on again. Check the pressure gauge to ensure it is within the normal range.
Conclusion
Changing your pool filter sand is a relatively simple task that ensures your filter keeps working efficiently and your pool stays sparkling clean. By following these steps and using high-quality pool filter sand, you’ll enjoy clear water and fewer chemical treatments. Don’t forget to monitor your pool filter’s pressure regularly, and replace the sand every three to five years to maintain optimal filtration.
For more pool care tips and products, check out AQUASTRONG’s range of pool maintenance solutions to keep your pool in top shape year-round.