Bulk CO₂ also works great for pH control in swimming pools. In water, CO₂ forms mild carbonic acid, which is a great cost-effective replacement for muriatic or dry acid used to lower and neutralize the pH of water.

Some of the additional benefits include:

- Eliminate storing and handling dangerous acids. (No reaction with chlorine)

- Safe for swimmers, employees and equipment.

- No corrosive acid fumes.

- Improves pH stability. (Impossible to lower pH below 6.8)