why is my pool filter blowing sand into the pool

Have you noticed sand particles floating around in your pool, even though you regularly clean and maintain it? If so, it is likely that your pool filter is the culprit. In this article, we will discuss the reasons why your pool filter may be blowing sand into the pool and what you can do to fix the problem.

Understanding Pool Filters

Before diving into why your pool filter is blowing sand into the pool, it is important to understand how your pool filter works. A pool filter is designed to remove debris and impurities from your pool water, such as dirt, leaves, and small particles. There are three types of pool filters: sand, cartridge, and diatomaceous earth (DE). Sand filters use sand as the filter media, while cartridge filters use a pleated cartridge, and DE filters use a fine powder made from the fossilized remains of diatoms.

Reasons Why Your Pool Filter Is Blowing Sand Into the Pool

1. Faulty Filter Valve

One possible reason why your pool filter is blowing sand into the pool is a faulty filter valve. The filter valve is responsible for directing the flow of water through your filter system. If the valve is faulty, it can cause the sand in the filter to be pushed back into the pool. In this case, you will need to replace the filter valve to fix the problem.

2. Incorrect Sand Size

If the sand in your filter is the wrong size or grade, it can cause sand particles to be blown back into the pool. The size of the sand used in your filter should match the manufacturer's recommendations. If the sand is too fine or too coarse, it can create gaps in the filter media, allowing sand particles to pass through.

3. Damaged Laterals

Sand filters have a series of laterals that distribute the water evenly across the sand bed. If these laterals are damaged or broken, it can cause sand to be blown back into the pool. You will need to inspect the laterals for damage and replace them if necessary.

4. Overfilled Sand

If your sand filter is overfilled with sand, it can cause sand to be blown back into the pool. Overfilling the filter can cause the sand bed to become compacted, which can result in gaps in the filter media. You will need to remove the excess sand and ensure that the sand bed is at the correct level.

5. Dirty Sand

Over time, the sand in your filter can become dirty and clogged with debris, which can cause sand to be blown back into the pool. If your sand filter has not been cleaned or backwashed recently, it may be time to do so. Backwashing your filter will remove any debris and dirt from the sand, allowing it to filter properly.

What You Can Do to Fix the Problem

If your pool filter is blowing sand into the pool, there are a few things you can do to fix the problem. First, you will need to determine the cause of the issue. If it is a faulty filter valve or damaged laterals, you will need to replace those parts. If the sand is the wrong size or grade, you will need to replace it with the correct type of sand. If the sand is overfilled or dirty, you will need to remove the excess sand or backwash the filter.

Preventing Sand From Being Blown Back into the Pool

Once you have fixed the problem, you can take steps to prevent sand from being blown back into the pool in the future. Here are a few tips:

- Regularly clean and backwash your pool filter according to the manufacturer's recommendations.

- Use the correct size and grade of sand for your filter.

- Avoid overfilling the sand filter.

- Inspect your filter system regularly for damage or wear and tear.

- Consider upgrading to a cartridge or DE filter if you continue to have issues with sand being blown back into the pool.

Conclusion

If you are experiencing sand particles in your pool, your pool filter may be the culprit. By understanding the reasons why your pool filter is blowing sand into the pool and taking steps to fix the problem, you can enjoy a clean and clear pool all season long. As always, consult a professional if you are unsure about how to maintain your pool filter or any other aspect of your pool.