What causes high pH in saltwater swimming pool?

The pH of a saltwater swimming pool should be between 7.2 and 7.8. When the pH is too high, it can cause the water to become cloudy, scale to form on the pool surfaces, and the chlorine to become less effective. There are a few common causes of high pH in saltwater swimming pools:

* Evaporation: When water evaporates from the pool, it leaves behind the dissolved solids, including the salt. This can cause the pH of the water to rise.

* Insufficient acid addition: The pH of saltwater pools can drift upward over time, so it's important to regularly add acid to keep it within the ideal range.

* Chlorine demand: When chlorine breaks down, it produces hypochlorous acid, which lowers the pH of the water. If the chlorine demand is high, it can use up all of the hypochlorous acid and cause the pH to rise.

* Other sources of alkalinity: Certain types of pool surfaces, such as concrete, can add alkalinity to the water and raise the pH. Additionally, some pool chemicals, such as baking soda, can also increase the pH.

How to Lower the pH of a Saltwater Swimming Pool

If the pH of your saltwater swimming pool is too high, there are a few things you can do to lower it:

* Add acid: The most common way to lower the pH of a saltwater pool is to add acid. Muriatic acid is the most commonly used acid for this purpose, but you can also use sodium bisulfate or hydrochloric acid. Always follow the directions on the product label when adding acid to your pool.

* Use a pH reducer: There are also a number of commercial pH reducers available that can be used to lower the pH of saltwater pools. These products typically contain a blend of acids and other chemicals that can help to lower the pH and keep it within the ideal range.

* Reduce the chlorine demand: If the chlorine demand is high, it can use up all of the hypochlorous acid and cause the pH to rise. Reducing the chlorine demand can help to keep the pH in check. This can be done by reducing the amount of chlorine you add to the pool, using a higher quality chlorine, or installing a chlorine generator.

* Balance the pool water: Make sure the other levels in your pool water are balanced correctly so they help in keeping the pH steady.

By following these tips, you can keep the pH of your saltwater swimming pool within the ideal range and ensure that your pool water is clean and comfortable.