If the target pH is 7.4 from 7.2, what is the correct quantity of soda ash to add?

To adjust the pH level in a swimming pool, especially when raising it from a lower value like 7.2 to the target of 7.4, soda ash (sodium carbonate) is commonly used. Soda ash increases pH levels effectively.

The specific amount of soda ash required can depend on a few factors, including pool volume and current pH levels. Generally, to raise pH by a fraction of a point, a precise calculation based on the pool's volume is necessary to find out how much soda ash is needed.

In typical scenarios for an average-sized swimming pool, adding around 6 ounces of soda ash is often adequate to raise the pH uniformly when starting from 7.2. This dosage balances the need for increasing pH without causing overshooting, which can lead to a higher than desired pH level that may require further adjustment.

Additionally, it’s important to consider that incremental adjustments are usually more practical and prevent over-correction. Hence, adding 6 ounces aligns with standard practices in pool chemistry, providing a safe and effective means to reach the desired pH level. Proper usage ensures the water remains safe, comfortable, and conducive to swimmer health.