How do salt levels in pool go up?

1. Evaporation: As water evaporates from the pool's surface, the concentration of dissolved solids, including salt, increases. This is a continuous process, especially during hot and dry weather.

2. Splashing and Rainfall: When pool water splashes out or during rainfall, some of the fresh water is replaced with water containing impurities and minerals, potentially increasing the salt content.

3. Backwashing and Filter Cleaning: If the pool's filter is backwashed or cleaned using salty water, some of that water can remain in the system and raise the overall salt levels.

4. Chemical Additives: Certain pool chemicals, such as salt-based sanitizers (e.g., sodium hypochlorite) or chemical treatments that contain salts, can directly contribute to an increase in the pool's salt concentration.

5. Saltwater Pool Conversion: If a previously chlorine-based pool is converted to a saltwater pool, a significant quantity of salt is intentionally added during the conversion process.

6. Incorrect Salt Testing: Improper testing procedures or faulty test kits can sometimes provide inaccurate readings, leading to the misinterpretation of actual salt levels in the pool.

It's essential to maintain appropriate salt levels within the recommended range specified by the pool manufacturer or pool care professionals to ensure proper sanitization and avoid potential issues related to high salt concentration in the pool water.