You probably already know that you need to add chlorine to a pool to keep gunk and organisms from thriving, but there are some other components of pool water that you need to familiarize yourself with as well (because they help the chlorine do its job):
- pH
- Alkalinity
- Calcium hardness
Why is pH important in a pool?
Thanks to the litmus paper strips from school, you’re likely familiar with pH — how acidic or basic a liquid is. The pH scale goes from 1 to 14 with acids on the low end and bases on the upper end and 7 being neutral. The optimal range for pool water is a pH of 7.2 to 7.6 — which would be slightly basic. pH is important to your pool water’s chemistry because if it’s too acidic, it will quickly deplete the chlorine, and if it’s too basic, it can corrode surfaces/equipment and irritate skin.
Why is alkalinity important in a pool?
Related to the pH of your pool, alkalinity is how much of an alkali (a base that dissolves in water like soda ash or baking soda) is present in your water. The optimal range for alkalinity is between 80 to 120 ppm (parts per million).
Why is hardness important in a pool?
Calcium hardness (the hardness or softness) is another vital component of pool water and will vary based on the water in your area. Balance is important here too: water that is too hard can corrode pool equipment (and expensive stuff like pumps and liners), while water that is too soft can cause calcium to leach from the pool walls or grout (creating another expensive problem). The optimal level of calcium hardness in a pool’s water is between 180 to 220 ppm (parts per million).
If you’re not interested in doing postgraduate work in chemistry, don’t fret. We can test your water for free and prescribe a routine perfect for your pool.