what does diatomaceous earth do in a pool filter

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Diatomaceous Earth in Pool Filter: Everything You Need to Know

If you own a swimming pool, you know how important it is to have a properly functioning pool filter. The filter is responsible for removing debris, dirt, and other contaminants from the water, ensuring that it stays clean and clear for swimming. One type of pool filter media that many pool owners use is diatomaceous earth (DE). But what exactly is DE and how does it work in a pool filter? This article will answer these questions and more.

What Is Diatomaceous Earth?

Diatomaceous earth is a fine, white powder that is made from the fossilized remains of tiny, aquatic organisms called diatoms. These diatoms have hard, silica-based shells that, over time, accumulate in sedimentary layers. Mined from the earth, DE is processed to remove impurities and then used in a variety of applications, including as a filtration media in swimming pool filters.

How Does DE Work in a Pool Filter?

DE is used as a precoat to coat the grids or fingers inside a DE filter. When the water enters the filter from the pool, it passes through the DE, which acts as a sieve, trapping particles and debris. The filtered water then exit the filter through the backwash valve, returning to the pool. In essence, DE works by creating a porous barrier that catches and removes contaminants from the water as it flows through the filter.

Advantages of Using DE in a Pool Filter

There are several advantages to using diatomaceous earth as a filtration media in your pool filter. Here are just a few:

1. Superior filtering properties: DE is highly effective at catching even the smallest particles, including dirt, debris, and microscopic organisms like algae.

2. Longer filter cycles: Because DE is so effective at filtering, it requires less backwashing than other filter media like sand or cartridge filters. This means longer periods between cleanings and lower water consumption.

3. Lower maintenance costs: Over time, using DE in your pool filter can save you money on maintenance costs. Because it requires less backwashing than other filter media, you'll use less water, which means lower water bills. Additionally, DE filters tend to last longer than other types of filters, so you'll save money in the long run by not having to replace your filter as frequently.

4. Cleaner water: DE is highly effective at removing contaminants from the water, which means that your pool water will be clearer and healthier for swimming.

Disadvantages of Using DE in a Pool Filter

As with any product, there are also some disadvantages to using diatomaceous earth in your pool filter. Here are a few to consider:

1. Messy to handle: DE is a fine powder, which means that it can be messy to handle. If you're not careful, you can end up creating dust storms in your backyard or pool area.

2. Requires more frequent cleaning: While DE filters require less backwashing than other types of filters, they do require more frequent cleaning. Over time, DE can clog up the filter grids, which means that you'll need to remove the grids, hose them down, and then add a fresh coat of DE to the filter.

3. Potential health risks: While DE is generally safe to use in swimming pool filters, there is some concern that inhaling it can be harmful to your health. It's important to follow safety precautions when using DE, including wearing a mask and gloves when handling the powder.

Conclusion

In conclusion, diatomaceous earth is a highly effective filtration media for swimming pool filters. While it has some disadvantages, the benefits of using DE, including superior filtering properties and lower maintenance costs, make it a popular choice among pool owners. With proper care and handling, DE can help keep your pool water clean, clear, and healthy for swimming all season long.