Swimming Pool cO2 system
An alternative to hazardous acids is to use CO 2 as a pH stabilizer in your water treatment / commercial pool system. Versatile, safe, and easy to maintain, adding CO 2 to commercial pools will help you lower pH levels, lower worker risk, and provide a better experience for swimmers.
Traditionally, pH levels are reduced using hydrochloric acid or powdered sodium bisulfate. However, these chemicals are corrosive, potentially harmful, and must be measured precisely as small errors can significantly impact pH levels. Liquid and dry acids are hazardous for workers to handle. They are poisonous if ingested, flammable, and negatively impact workers’ health if inhaled. Acids are corrosive and significantly affect the lifespan of your pool and equipment during regular use. When disposed of, these harsh chemicals can have critical consequences for the environment, including plants and animals.
Meanwhile, CO2is inert, non-poisonous, non-flammable, and does not require personal protective equipment, such as special clothing or breathing apparatuses, while being handled. It safely and effectively works as a pH stabilizer while lowering the overall risk at your commercial pool. As CO2occurs in nature, it does not impact the environment when pool water is discarded.
By consistently maintaining an optimum pH level, you will:
- Ensure safe water conditions
- Improve water clarity
- Use fewer chemicals
- Have less damage to pool surfaces
One Carbo-Series bulk CO2 system meets all of your CO2 requirements. The system requires zero employee handling and provides a continuous supply of CO2.
Improve Overall Water Quality – It works like this:
- Liquid CO2 is delivered in bulk right at your site.
- Liquid CO2 is securely transferred through the outside wall into Carbo-Series bulk storage tank. Note: The bulk CO2 tank can also be installed outdoors.
- CO2 gas is dispensed from the Carbo-Series bulk storage tank, providing continuous pH control.
- A CO2 Monitoring System assures the safety of your working environment
How CO2 Works in Pool Chemistry
A commercial pool CO2 system is designed to provide a continuous, controlled source of carbon dioxide for pH adjustment. In a typical setup, liquid CO2 is delivered in bulk and stored on-site. Then, the system dispenses CO2 gas into the pool water treatment process as needed.
The process is straightforward:
- Liquid CO2 is delivered to your site.
- The CO2 is transferred into a storage tank or connected system.
- CO2 is injected into the water stream to reduce pH.
- Monitoring and control equipment helps maintain target levels.
Since the system can work with automated controls, pool operators don’t have to manually add acid throughout the day, reducing labor demands and enabling more consistent pool chemistry. For facilities exploring smart pool systems, remote pool monitoring, or broader pool automation, CO2 injection can fit seamlessly into a modern water treatment setup.
Comparing CO2 to Other Pool Acid Treatments
Traditional pool acid treatments often include hydrochloric acid or sodium bisulfate. While these products can be effective, they also carry handling, storage, and safety concerns; acids are corrosive, require careful dosing, and can create hazards for staff if spilled, inhaled, or mishandled.
CO2 provides a different path. Carbon dioxide is non-flammable and doesn’t create the same direct chemical exposure issues as liquid acid, so it lowers risk for employees working around the system.
There are also long-term operating advantages; a CO2 system can help reduce direct contact between harsh acids and pool finishes, pumps, and related equipment. Over time, that results in less wear on surfaces and components. For many pool owners, CO2 is a more manageable method that also improves the swimmer experience. It’s often chosen over muriatic or sulfuric acid when operators want a safer pH control method, reduced chemical handling, and more consistent day-to-day performance.
Practical Maintenance Tips for Pool Operators
Like any commercial pool system, a CO2 setup performs best when it’s monitored and maintained diligently. Operators should routinely review pH readings, confirm that injection equipment is functioning correctly, and inspect storage and delivery components for any signs of wear or leaks.
Follow a few simple steps:
- Use continuous monitoring for pH and related pool chemistry readings
- Make seasonal adjustments as water temperature, use, and demand change
- Inspect injection points, regulators, and feed equipment on a consistent schedule
- Train staff on safe system awareness and proper response procedures
- Pair the system with a CO2 monitoring solution for added workplace safety
This process helps pool maintenance professionals stay ahead of issues and get greater value from the system over time.
Broward Nelson provides CO2 solutions for commercial pools that want a more controlled and lower-risk way to manage pH. Whether you manage a hotel pool, community pool, aquatic facility, or another high-use environment, Broward Nelson can help you move toward safer, more efficient pool water management with CO2.
If your facility is evaluating a bulk CO2 system, Broward Nelson can help you choose a setup that fits your pool’s size, usage, and water treatment goals. Learn more about our solutions and how they support dependable CO2 delivery for commercial applications.
Frequently Asked Questions
pH (potential of hydrogen) is the way acidity or alkalinity is measured. Pure water has a pH of zero but the pH could swing left or right depending on what is dissolved in it. Calcium and magnesium will pull the pH up. Acids have the opposite effects and will make water more acidic.
The most effective way to stabilize and maintain your pH is to dose it with CO2 24/7. Your pool equipment will measure the pH levels and inject CO2 as needed. This will reduce the need for adding acid or caustic chemicals to your water.
CO2 tanks are permanently installed and safely filled from outside. Your employees will not need to handle any caustic or potentially dangerous chemicals. The CO2 system automatically turns on and off accordingly to the pH settings. Also, the lower use of acids and chemicals will help preserve the pool surface, minimizing the need for expensive remodels.