Poolking, your best swimming pool equipment manufacturer and supplier with more than 20 years experience.                                                                              +8613922334815

  • Product Details

A well-maintained and clean pool is a source of joy in any household. However, keeping pool water clear and inviting requires continuous care and effort. A sand filter is a key component that keeps your pool water crystal clear. A sand filter helps to remove dirt, debris, and impurities from the water, ensuring a safe and refreshing swimming experience.

clean pool

However, like any other thing, sand filters can also experience problems over time. 

Common problems in pool sand filters and how to troubleshoot these issues. 

This article will discuss the most common problems in sand filters and how you can fix these. 

So, here we go:

1. Leakage in sand filter

Leakage is always a frustrating problem that can arise in pool sand filters. However, various things can cause leaks in sand filters, including cracked filter housing, worn-out seals, and improper installation.

· Inspect Seals of Sand Filter

Start the process by thoroughly examining the seals. Seals are typically located around the filter tank, multiport valve, and pressure gauge. Once you have found the seals, look for wear, cracks, or degradation signs.

If you find any issue, it's crucial to quickly replace the seals. However, you must use compatible replacement parts that the filter manufacturer recommended for an efficient solution.

· Check Filter Housing

If your filter's seas are fine, carefully inspect the filter housing. Look for any visible cracks or damage. A cracked tank can lead to leaks and compromised filtration. If you have detected cracks, consider replacing the entire tank to prevent further problems.

· Tighten Any Loose Fittings

Over time, the vibrations caused by the pool pump and sand filter operation can loosen fittings. Check all the connections and fittings of your filter system. It includes fittings around the pump, multiport valve, and hoses. In addition, you must use appropriate tools to tighten any loose connections and ensure a secure fit.

2. Reduced efficiency of sand filter

A clogged or worn-out filter media can be the key reason if your sand filter isn't working efficiently. You must perform the following things to improve the efficiency of your sand filter.

· Backwash Your Sand Filter Regularly

Backwashing is an essential maintenance step that reverses water flow through the filter to dislodge and flush out accumulated debris. So, follow these steps for effective backwashing:

  1. 1. Turn off the pool pump.

2. Then turn the multiport valve to the "Backwash" position.

3. Now turn on the pump and let it run until the water in the sight glass becomes clear.

4. Turn off the pump, switch the valve back to the "Filter" position, and turn the pump back on.

· Replace the Sand of Your Filter

Over time, the sand within the filter can lose effectiveness due to continuous use. Therefore, it is generally recommended to replace the sand every 3 to 5 years, depending on pool usage and local conditions. Above all, you must follow your sand filter manufacturer's recommendations when considering sand replacement.

· Chemical Treatment

A filter cleaner can help break down oils, greases, and other contaminants that accumulate on the sand bed. So, you must follow the manufacturer's instructions for properly applying the filter cleaner. Cleaning the sand filter thoroughly can help you remove clogging from it. 

3. Loose or broken valve handle

A multiport valve in your pool sand filter controls the water flow through the filter. A broken or loose valve can affect the proper functioning of your pool sand filter. You must fix this problem quickly to avoid any inconvenience.

If you notice that the valve handle is loose, it's essential to tighten it appropriately. Use the appropriate tools to secure the multiport valve in place. However, if the handle is broken, it needs to be replaced quickly to ensure smooth operation of the valve.

4. Low filter pressure

So, another common problem in pool sand filters requires your attention. Low filter pressure means a problem with water flow, blockages, or even a malfunctioning pump. However, you can fix the problem with the following instructions:

· A malfunctioning pump can lead to reduced water flow and pressure. If you identify any issues with the pump, it's crucial to repair or replace it as needed.

· Debris, leaves, and other contaminants can accumulate in the skimmer and pump baskets, obstructing the water flow. Regularly check and clean these baskets to prevent clogs and maintain proper water circulation.

· Inspect the suction lines for any blockages. A blocked suction line can reduce water intake and cause low pressure in the filter.

5. Cloudy water problem.

The cloudy water problem is also an important yet common sand filter problem. The problem can result from improper chemical balance, inadequate filtration, or other underlying problems. However, you can fix the cloudy water problem of your sand pool filter in the following ways:

· Increase the duration of filter operation to improve water circulation and filtration.

· Ensure the pool's chemical levels are within the recommended range because imbalanced water chemistry can contribute to cloudiness

6. Bad lateral

Lateral damage is also one of the common issues in pool sand filters. The problem can also affect the performance of your sand filter. However, replacing the lateral can help you to fix the problem.

If you suspect a damaged lateral, remove the sand from the filter and replace the damaged lateral with a new one. It will also improve water distribution within the filter tank.

Final Thoughts

Pool sand filters are crucial for maintaining a clean and enjoyable swimming environment. Regular maintenance can also prevent many common problems from arising. Follow the guidelines mentioned above to fix pool sand filters effectively. 

Related articles

Pool Cartridge Filters vs Sand Filters – Everything You Need to Know

3 Reasons to Regularly Clean and Replace your Pool Filter Cartridges

How to Choose a Cartridge Filter for Your Above Ground Pool?

Common Above Ground Pool Cleaning and Maintenance Tips to Avoid

How to Clean and Maintain Pool Cartridge Filters?

Basic Information
  • Year Established
  • Business Type
  • Country / Region
  • Main Industry
  • Main Products
  • Enterprise Legal Person
  • Total Employees
  • Annual Output Value
  • Export Market
  • Cooperated Customers

Send your inquiry

If you have any inquiry about our products, feel free to contact us that we are 24 hours on line.We've got preferential price and best-quality products for you.​​​​​​​


Send your inquiry

Choose a different language
Tiếng Việt
bahasa Indonesia
Current language:English