Keeping a pool in perfect condition requires attention to several factors, including the alkalinity of the water.
What is pool alkalinity?
An appropriate alkalinity balance helps stabilize the pH and keep the water crystal clear and safe for swimming. In this article, we explain what alkalinity is, its relationship with pH, and how to correct it if it falls outside the recommended levels.
The total alkalinity of a pool is a measure of the concentration of alkaline substances dissolved in the water, mainly carbonates, bicarbonates, and hydroxides. This parameter acts as a buffer that stabilizes the pH, preventing sudden fluctuations that could affect water quality and the effectiveness of the chemicals used in its treatment.
What is the difference between pH and alkalinity?
Alkalinity and pH are often confused, but they are different concepts:
- pH: measures the acidity or basicity of water on a scale from 0 to 14.
- Alkalinity: indicates the water's ability to resist changes in pH.
A well-balanced alkalinity level helps maintain a stable pH, preventing it from becoming too acidic or basic. To monitor these parameters, it is essential to carry out regular tests using water measurement and analysis equipment.
What happens if the pool's alkalinity is low?
When alkalinity is below the recommended levels, the pH becomes unstable and can fluctuate easily. This can cause:
- Corrosive water that damages pool surfaces and equipment.
- Eye and skin irritation for swimmers.
- Reduced effectiveness of disinfectants, such as chlorine.
To prevent these problems, it is important to regularly monitor alkalinity levels and make adjustments when necessary.
What happens if the pool's alkalinity is high?
If alkalinity is too high, problems such as the following may arise:
- Cloudy water due to mineral precipitation.
- Blockages in filtration systems.
- Difficulty adjusting the pH, which can reduce the effectiveness of disinfectants.
In these cases, it is necessary to reduce the alkalinity using the appropriate products to balance the water levels.
What is the ideal alkalinity level for pool water?
The recommended total alkalinity level in a pool is between 80 and 120 ppm (parts per million). This range ensures that the pH remains stable and that the water retains its quality.
How do you increase pool water alkalinity?
How to raise pool alkalinity
If alkalinity is low, you can increase it by adding sodium bicarbonate in the recommended doses. This compound raises alkalinity without significantly altering the pH. In addition, using dosing systems helps administer pool chemicals in a controlled and efficient manner.