when should you change the sand in your pool filter

Author: Poolking - Swimming Pool Equipment Manufacturer

When Should You Change the Sand in Your Pool Filter?

As a pool owner, it is imperative to ensure that your pool is always in top condition. One of the components that contribute to the quality of your pool water is the pool filter. Over time, the filter can become overwhelmed with dirt and debris, which is why it is important to know when to change the sand in your pool filter. This article will provide you with all the information you need to know about your pool filter and when to change the sand.

Understanding Pool Filters

Pool filters come in different forms, including sand filters, cartridge filters, and diatomaceous earth (DE) filters. The sand filter is the most common type of filter in use in residential pools. The sand filter works by pumping water through a bed of sand, trapping dirt, debris, and other contaminants in the sand bed, then allowing the clean water to flow back into the pool.

What is Pool Filter Sand?

Pool filter sand is a specially graded sand that is effective at trapping dirt, debris, and other pollutants in your pool water. Over time, the sand can get clogged up with dirt and debris, reducing its ability to filter the water effectively. When this happens, it’s time to change the sand.

Signs That You Need to Change the Sand in Your Pool Filter

Now that you understand what pool filter sand is and how it works, it’s time to look at the signs that indicate that you need to change the sand in your pool filter. Here are five signs that it’s time to replace the sand in your pool filter:

1. The pool water is cloudy

If your pool water is cloudy, it’s a sign that the filter is not working effectively. The sand bed could be clogged up, which reduces its ability to trap debris and dirt. A clogged filter requires a complete sand change to restore the filter’s full functionality.

2. The pressure gauge is reading higher than normal

Your pool filter has a pressure gauge that measures the pressure inside the filter. If the pressure reading is higher than usual, it indicates that the filter is dirty and needs a change. A clogged filter can cause your pump to work harder than it should, which can lead to expensive repair costs.

3. The sand is discolored

If the sand in your filter is stained, discolored, or slimy, it’s a sign that you need to change the sand. The discoloration could be due to algae growth or other contaminants that have built up in the sand bed.

4. The water flow rate is low

A low water flow rate is an indication that the filter is not working effectively. It could be that the sand is clogged and needs a change. A low water flow rate can also be due to a clogged impeller or pump, so it’s important to check these components as well.

5. The sand has been in the filter for more than five years

It’s recommended that you change the sand in your pool filter every 3-5 years. So, if the sand in your filter has been in use for more than five years, it’s time for a change.

How to Change the Sand in Your Pool Filter

If any of the signs above apply to your filter, it’s time for a change. Here is a step-by-step guide on how to change the sand in your pool filter:

Step 1: Turn off the pump

Before you start the sand change process, turn off the pump and make sure the electricity is off.

Step 2: Drain the filter

Open the filter drain to remove the water, then remove the sand using a wet/dry vacuum.

Step 3: Check the laterals

Inspect the laterals for any damage or cracks, and replace if necessary.

Step 4: Refill the filter with new sand

Fill the filter with new pool filter sand, following manufacturer instructions.

Step 5: Backwash the filter

Backwash the filter to remove any residual debris, dirt or other contaminants.

Step 6: Restart the pump

Turn on the pump and allow it to circulate the water through the newly filled filter for several hours before testing the water.

Conclusion

Changing the sand in your pool filter is an important part of pool maintenance. Knowing when to change the sand will ensure that your pool filter continues to work effectively, maintaining your pool water clarity and cleanliness. Keep an eye out for the signs discussed above and follow the steps outlined to change the sand in your pool filter.