Muriatic Acid & Sand Filters: Protecting Your Above Ground Pool

Muriatic acid is commonly used to lower the pH level of swimming pool water. When used correctly, muriatic acid is safe for your pool filter. However, if too much muriatic acid is added to the pool water, it can damage the filter.

The recommended pH level for swimming pools is between 7.2 and 7.8. When the pH level is too high, it can cause the pool water to become cloudy and scale to form on the pool walls and equipment. Muriatic acid is used to lower the pH level of pool water by adding hydrogen ions to the water.

If too much muriatic acid is added to the pool water, it can cause the pH level to drop below 7.2. This can damage the pool filter by causing the filter media to become brittle and break down. The filter media can also become clogged with scale, which can reduce the filter's efficiency.

In addition to damaging the pool filter, too much muriatic acid can also cause the pool water to become corrosive. This can damage the pool liner and other pool equipment.

It is important to follow the manufacturer's instructions when adding muriatic acid to your pool water. The instructions will tell you how much muriatic acid to add and how often to add it. If you are not sure how to add muriatic acid to your pool water, you can consult with a pool professional.