when to change sand in pool filter

Author: Poolking - Swimming Pool Equipment Manufacturer

When the filter is working properly, the sand inside the filter can last anywhere from three to five years. However, if you notice that your pool water isn't as clear as it used to be or the water pressure has dropped, it may be time to change the sand. In this article, we'll discuss when to change sand in a pool filter, signs that it's time for a sand change, and the steps you should take to replace the sand.

Signs that it's Time to Change Sand

1. Poor Water Quality: When your pool water is no longer crystal clear, despite regular pool maintenance, it may be time for a sand change. If your sand filter is no longer effectively removing debris and contaminants from your pool, it will show up in the water quality.

2. Low Water Pressure: If the water pressure coming from your pool jets has significantly decreased, it could be due to a clogged or dirty filter. When sand builds up inside the filter, it can restrict the flow of water and cause low water pressure.

3. A Dirty Filter: A dirty or clogged pool filter is also a sign that it's time to replace the sand. If you notice that the filter pressure gauge is constantly reading high or the filter is dirty with debris, it's time to replace the sand.

4. A Noisy Filter: If your pool filter is making more noise than usual, it may be an indication of sand that has broken down and is circulating through the filter. This can cause the filter to make a grinding or rubbing noise and is a clear sign that it is time to change the sand.

5. Pool Equipment Problems: If you're experiencing issues with other pool equipment like the pump, skimmer, or pool heater, it's possible that the sand filter is not performing as it should be. If this is the case, it's time for a sand change.

How to Replace Pool Filter Sand

Now that you know the signs that it is time to change your pool filter sand let's talk about how to do it.

1. Turn off the Pool Pump: The first step in changing your pool filter sand is to turn off the pool pump. This will ensure that there is no water flowing through the filter during the process.

2. Release the Pressure: Before you open the filter, there is likely to be pressure built up inside the filter. To release this pressure, locate the air bleed valve on the filter and open it to let the air out.

3. Remove the Old Sand: Once the pressure has been released, you can remove the old sand. Depending on the make and model of your pool filter, this may involve removing the multiport valve or unscrewing the filter head. Once you have access to the sand, use a pool scoop or plastic shovel to remove the old sand.

4. Clean the Filter: After removing the old sand, use a hose to rinse out the inside of the filter to remove any debris or residue that may be left behind.

5. Add the New Sand: Once you have cleaned out the filter, you can add the new sand. The amount of sand needed will depend on the size of your filter, so be sure to consult your pool owner's manual or contact a pool professional to determine the appropriate amount.

6. Reassemble the Filter: After adding the new sand, it's time to reassemble the filter. This may involve replacing the multiport valve or tightening the filter head. Be sure to follow the manufacturer's instructions carefully to avoid any damage to the filter.

In Conclusion

Changing your pool filter's sand is an essential part of pool maintenance that shouldn't be overlooked. By keeping an eye out for signs that it's time for a sand change and following the steps outlined in this article, you can keep your pool water crystal clear all summer long.