Sodium bisulfate, also known as sodium hydrogen sulfate is an acid that forms when sulfuric acid is combined with a sodium base, like sodium chloride or sodium hydroxide. ... When it comes to pool care, sodium bisulfate is an acidity regulator that is used to lower the pH and total alkalinity of your pool water.

Can I use sodium bisulfate to lower alkalinity?

Sodium bisulfate, or dry acid, is an acid salt known as sodium hydrogen sulfate. It can be used in a lot of ways such as food additives and cleaning, but in swimming pools, it's often used to lower pH balance and total alkalinity when they get too high.

How do you lower alkalinity in a pool?

To lower the alkalinity in your pool, try using a strong acid like muriatic acid, sodium bisulfate, or sulfuric acid all of which will lower the alkalinity. If your pool water is a little murky or your pool filters seem to be plugged with calcium deposits, then your pool may be suffering from high alkalinity levels.