Total Hardness measures the concentration of minerals, mainly calcium and magnesium ions, in your pool water. It is expressed in ppm (parts per million). Ideal hardness is between 150 and 250 ppm, although it can vary depending on the type of pool (liner, concrete, etc.).

Water that's too soft (low hardness) becomes corrosive, which can damage liners, metal equipment or even the pool's concrete. Conversely, water that's too hard encourages the formation of limescale deposits on walls, pipes and equipment, making them harder to maintain.

Hardness enhancers are generally composed of calcium chloride. When added to water, they release calcium ions, thereby increasing hardness. This process stabilizes water mineralization and prevents imbalances that could affect the longevity of your pool.

If hardness exceeds 400 ppm, we recommend diluting the water with a partial replenishment of softer water to restore the balance.

In short: good hardness management protects your equipment and ensures healthy, balanced pool water. Test it regularly to prevent problems!