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


how to clean pool filter with muriatic acid


Author: Poolking - Swimming Pool Equipment Manufacturer

How to Clean Pool Filter with Muriatic Acid

Maintaining a clean and well-functioning pool is essential to ensure its longevity and comfort for swimmers. One of the most critical components of a pool system is the filter, which is responsible for removing dirt, debris, and other impurities from the water. Over time, however, the filter can become clogged and dirty, hindering its performance and reducing the efficiency of the pool. Cleaning the pool filter with muriatic acid is a simple yet effective way to restore its functionality and prolong its lifespan. In this article, we will discuss the steps involved in cleaning the pool filter with muriatic acid and offer some tips on how to do it safely and effectively.

Why Use Muriatic Acid to Clean Pool Filter?

Muriatic acid, also known as hydrochloric acid, is a powerful chemical that is widely used for various cleaning and maintenance purposes. It is an excellent choice for cleaning a pool filter because it can dissolve mineral deposit buildup, break down oils and other contaminants, and sanitize the surfaces. Moreover, muriatic acid is readily available and relatively inexpensive compared to other pool filter cleaning agents. However, it is essential to use it with caution and follow the proper safety protocols to avoid potential hazards and damage to the equipment and surroundings.

Preparing for Cleaning the Pool Filter with Muriatic Acid

Before you begin cleaning the pool filter with muriatic acid, you need to gather the necessary tools and materials, including:

- A pair of safety gloves and goggles to protect your eyes and skin from possible exposure to the acid

- A bucket or container to mix the acid solution and soak the filter

- A hose or pressure washer to rinse the filter and remove debris

- A measuring cup or scale to measure the acid and water accurately

- A well-ventilated and safe outdoor area to prevent the acid fumes and spills from affecting your health or environment.

It is also recommended to read the manufacturer's instructions for your particular pool filter model and consult with a professional if you are unsure about the process or risks.

Steps to Clean Pool Filter with Muriatic Acid

Once you have all the necessary equipment and safety gear, you can proceed with the following steps to clean the pool filter with muriatic acid:

1. Turn off the pool pump and filter system and remove the filter from the housing.

2. Inspect the filter for any visible damage or wear, and if necessary, replace any worn or broken parts before cleaning.

3. Mix the muriatic acid solution in the bucket or container by adding 1 part of acid to 10 parts of water or as per the manufacturer's recommendations. Stir the mixture slowly and carefully, avoiding splashes or spills.

4. Immerse the filter in the acid solution and soak it for about 20 to 30 minutes, or until you see the dirt, scale, and other residue dissolve.

5. Remove the filter from the acid solution and rinse it thoroughly with a hose or pressure washer, aiming for all sides and corners to remove any remaining debris or acid.

6. Inspect the filter again and clean any remaining residue with a soft brush or cloth while wearing gloves and goggles.

7. Re-install the filter back into the housing, reassemble the system, and turn it on to check the water flow and pressure.

8. Finally, dispose of the acid solution and other waste materials responsibly and safely, following the local regulations and guidelines.

Tips for Safe and Effective Pool Filter Cleaning with Muriatic Acid

Here are some additional tips to help you clean your pool filter successfully and safely with muriatic acid:

- Always wear protective gear, such as gloves, goggles, and a mask, to prevent skin and eye irritation or inhalation of acid fumes.

- Do not mix the acid with other chemicals, especially chlorine, as it can create a dangerous reaction and release toxic gases.

- Use the recommended acid concentration and soak time to avoid damaging the filter or overexposing it to the acid.

- Rinse the filter thoroughly with water after soaking and scrub any remaining debris gently.

- Dispose of the acid and waste materials safely and according to the local regulations and guidelines, preferably by contacting a hazardous waste disposal service.

- Consider scheduling regular pool filter cleaning and maintenance, as recommended by the manufacturer or a professional, to prevent clogging, damage, or inefficiency.


Cleaning a pool filter with muriatic acid is a simple and effective way to remove dirt, debris, mineral deposits, and other contaminants that may hinder its performance and longevity. However, it is essential to use the acid solution with caution and follow the proper safety protocols and guidelines to avoid potential hazards and damage to the equipment and surroundings. By adopting best practices for pool filter cleaning and maintenance, you can ensure a clean, safe, and enjoyable swimming experience for yourself and your guests.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English