how to clean a diatomaceous earth pool filter


Author: PoolKing - Pool Sand Filter Manufacturers

How to Clean a Diatomaceous Earth Pool Filter

Swimming pools are a great addition to any household. They provide a perfect way to beat the heat and unwind after a long day. However, with great fun comes great responsibility. You must ensure that your swimming pool is clean and safe for use at all times. The most crucial aspect of pool maintenance is the pool filter. Just like any other filter, pool filters require regular cleaning to function efficiently. In this article, we will guide you on how to clean a diatomaceous earth pool filter.

Introduction to Diatomaceous Earth Pool Filters

Diatomaceous earth pool filters are the most commonly used pool filters in modern pools. These filters make use of the powder created from diatomaceous earth to filter out dirt, debris, and other pollutants in the pool water. Diatomaceous earth filters can get rid of particles as small as 2-5 microns, making it the most effective pool filter type in the market. Despite its effectiveness, diatomaceous earth pool filters require regular cleaning for optimal performance.

Pre-Cleaning Preparations

Before getting started with cleaning a diatomaceous earth pool filter, there are specific preparations to undertake. Begin by ensuring the pool's power supply is off. Also, turn off the main valve that supplies water to the filter. As earlier mentioned, diatomaceous earth pool filters can trap very tiny particles, hence making them clog quickly. For this reason, it's important to get rid of your water's current drainage system, reducing the chances of added debris' entry.

Disassembling the Filter

The next step is disassembling the filter. Begin by removing the filter from the plumbing. You will notice that the filter grid element is between the top cover and the bottom grate. Start removing the bolts holding these parts together cautiously. After removing them, lift the top cover, and you will observe that the diatomaceous earth is coating the filter's grid mesh.

Cleaning of the Grid Mesh

Cleaning the mesh is the primary step in cleaning your diatomaceous earth filter. It's crucial to understand that this step requires a lot of care to avoid damaging the mesh. Start by washing the grid mesh using a high-pressure hose. Ensure that you turn the water pressure down to avoid ruining the mesh. Additionally, be sure to clean each grid's nooks and crannies to get rid of trapped dirt and debris.

Soaking the Grid in Cleaning Agent

After cleaning the mesh, it's time to soak it in a cleaning agent. Using a cleaning agent is essential for removing the tough stains that might not come off with water pressure. Mix a cleaning agent with water and let the grid soak for about 12-24 hours. In certain instances, it's crucial to soak the mesh overnight to ensure it's impeccably clean.

Rinsing the Grid Mesh

After soaking, rinse the grid mesh using a high-pressure hose. Be sure to remove any remaining debris or cleaning agents on the mesh. It's also vital to check if the nooks and crannies of the grid mesh are clean. Any remaining dirt or debris can cause it to perform poorly.

Reassembly and Addition of New Diatomaceous Earth

The final step in cleaning a diatomaceous earth pool filter is reassembly. Start by arranging the cleaned grid elements back into place, ensuring you have the correct order to avoid damage to the filter's mesh. Once you finish doing that, it's time to replace the Diatomaceous earth powder. After replacing it, put the top cover back in place and secure the bolts. It's essential to understand that after every cleaning, add new diatomaceous earth to ensure optimal filter performance.


In conclusion, cleaning your diatomaceous earth pool filter is crucial for ensuring your pool water is clean, safe, and healthy. By following the steps outlined above, you'll be able to clean your filter accurately, and it will perform optimally. It's crucial to undertake regular cleanings, depending on the pool usage rate, to ensure optimal pool performance. With these tips, you are now ready to maintain your pool thoroughly.


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