how do you remove sand from pool filter

How Do You Remove Sand from Pool Filter?

Pool maintenance can be a daunting task, especially when you have to deal with a clogged pool filter. A pool filter is an essential part of your pool system, responsible for removing impurities and keeping your pool water clean and clear. Over time, your pool filter may accumulate sand and debris, leading to a decrease in water flow and overall pool performance. In this article, we will guide you through the various ways to remove sand from your pool filter and keep your pool running smoothly.

Understanding Your Pool Filter

Before we dive into the methods of sand removal, it is important to understand the type of pool filter you have. There are three main types of pool filters: sand filters, cartridge filters, and DE (diatomaceous earth) filters. Sand filters are the most common pool filter, using sand as the filter medium to trap dirt and debris. Cartridge filters use a replaceable cartridge to trap debris, while DE filters use a fine powder made from fossilized diatoms to capture impurities.

The sand filter system uses a multiport valve to control the flow of water. When water enters the filter, it passes through a layer of sand where impurities are trapped. In time, the sand becomes clogged with debris, reducing water flow and overall performance. Backwashing is the process of reversing the flow of water to wash out the accumulated debris, which is then flushed out through the waste port.

Method 1: Backwashing

Backwashing is the most common way to remove sand from your pool filter. It is a quick and easy process that can be done on a regular basis to keep your filter clean and running smoothly. Here's how to backwash your sand filter:

Step 1: Turn off the pool pump

Step 2: Turn the multiport valve to the backwash position

Step 3: Turn the pool pump back on and let it run for 2-3 minutes, or until the water in the sight glass runs clear

Step 4: Turn off the pool pump

Step 5: Turn the multiport valve to the rinse position

Step 6: Turn the pool pump back on and let it run for 1-2 minutes, or until the water in the sight glass runs clear

Step 7: Turn off the pool pump

Step 8: Return the multiport valve to the filter position

Step 9: Turn the pool pump back on

Method 2: Sand Replacement

If backwashing does not solve the problem, you may need to replace the sand in your pool filter. Over time, sand can become compacted, reducing its effectiveness in trapping debris. Here's how to replace the sand in your pool filter:

Step 1: Turn off the pool pump

Step 2: Open the air relief valve at the top of the filter, and remove the drain plug or cap at the bottom of the filter to drain the water

Step 3: Remove the multiport valve and sand from the filter tank

Step 4: Thoroughly clean the inside of the filter tank with a mix of water and muriatic acid to remove any debris or calcium buildup

Step 5: Pour new pool filter sand into the filter tank, filling it up to the recommended level

Step 6: Reinstall the multiport valve and fill the filter tank with water

Step 7: Turn on the pool pump and run on the backwash setting for several minutes to rinse out any excess sand

Step 8: Return the multiport valve to the filter setting and continue normal pool operation

Method 3: Sand Filter Cleaner

If backwashing and sand replacement do not solve the problem, you may need to use a sand filter cleaner. Sand filter cleaners break down oils, grease, and other debris that get trapped in the sand, allowing them to be easily backwashed out of the filter. Here's how to use a sand filter cleaner:

Step 1: Turn off the pool pump

Step 2: Add the recommended amount of sand filter cleaner to the skimmer

Step 3: Turn the pool pump back on and let it run for 24-48 hours on the recirculate setting

Step 4: After the recommended time, turn the pool pump off

Step 5: Turn the multiport valve to the backwash position

Step 6: Turn the pool pump back on and let it run for 2-3 minutes, or until the water in the sight glass runs clear

Step 7: Turn off the pool pump

Step 8: Turn the multiport valve to the rinse position

Step 9: Turn the pool pump back on and let it run for 1-2 minutes, or until the water in the sight glass runs clear

Step 10: Turn off the pool pump

Step 11: Return the multiport valve to the filter position

Step 12: Turn the pool pump back on and resume normal pool operation

Method 4: Professional Cleaning

If all else fails, you may need to seek the help of a professional pool cleaner. A pool service technician can perform a thorough cleaning of your sand filter, including a backwash, sand replacement, and sand filter cleaner application if necessary. This option may be more expensive, but it guarantees a clean pool filter and can save you time and hassle in the long run.

Conclusion

Maintaining a clean and efficient pool filter is essential for the overall performance and longevity of your pool system. By understanding the type of pool filter you have and following the appropriate methods for sand removal, you can keep your pool running smoothly and enjoy a crystal clear swimming season. Remember to backwash regularly, replace sand when necessary, use a sand filter cleaner as needed, and seek professional help if all else fails. Happy swimming!