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Alkalinity in Pools: What is and why is it important?

By Juan Carlos Rivas  •   2 minute read

Alcalinidad en piscinas

Maintaining a pool in perfect condition requires paying attention to several factors, including the Water alkalinity

What is the alkalinity of a pool? 

An adequate alkalinity balance helps stabilize pH and keep crystalline and safe water for the bathroom. In this article, we explain What is alkalinity, its relationship with the pH and how to correct it if it is outside the recommended levels. 

The Total alkalinity of a pool is the measure of the concentration of alkaline substances dissolved in the water, mainly carbonates, bicarbonates and hydroxils. This parameter acts as a shock absorber that stabilizes pH, avoiding abrupt fluctuations that could affect water quality and the effectiveness of the chemicals used in their treatment. 

What is the difference between pH and alkalinity? 

Often, alkalinity and pH are confused, but they are different concepts: 

  • pH: It measures the acidity or basicity of the water on a scale of 0 to 14. 
  • Alkalinity: Indicates the ability of water to resist changes in pH. 

Well -balanced alkalinity helps maintain a stable pH, preventing it from becoming too acidic or basic. To control these parameters, it is essential to perform regular tests with equipment Water measurement and analysis

What happens if the alkalinity of the pool is low? 

When alkalinity is below the recommended levels, the pH becomes unstable and can easily fluctuate. This can cause: 

  • Corrosive water that damages the surfaces of the pool and the equipment. 
  • Irritation in the eyes and skin of the bathers. 
  • Lower effectiveness of disinfectant products, such as chlorine

To avoid these problems, it is important to regularly monitor alkalinity levels and make adjustments when necessary. 

What happens if the alkalinity of the pool is high? 

Yes alkalinity is too high, problems such as: 

  • Murky water due to the precipitation of minerals. 
  • Blocking in filtration systems. 
  • Difficulty adjusting the pH, which can reduce the effectiveness of disinfectants. 

In these cases, it is necessary to reduce alkalinity using the appropriate products to balance water levels. 

What is the ideal level of alkalinity in the water of a pool? 

He Recommended alkalinity level Total in a pool is between 80 and 120 ppm (parts per million). This range guarantees that the pH is stable and that the water retains its quality. 

How is the pool water alkalized? 

How to upload the alkalinity of the pool 

If the alkalinity is low, you can increase it by adding sodium bicarbonate in the recommended doses. This compound elevates alkalinity without significantly altering the pH. In addition, the use of dosing systems Help manage Pool chemicals in a controlled and efficient way. 

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