Our CYA is on the high side at 90, and Total/Free Chlorine is at 10ppm. According to the CYA/chlorine chart, it sounds like that is okay but not recommended. pH is at about 7.9 (but I just added some acid to lower it), and Total Alkalinity is at about 100. My question is will it be okay for us to swim in the spa (which is connected to our pool) with the high chlorine levels, or do I need to try to lower it somehow? The weather has been fairly cold here lately with not a lot of sun, which I assume is why the chlorine hasn't come down...
High CYA/Chlorine Question
- Thread starter bmsm6
- Start date
That ratio seems about right for the CYA and the acid will lower ph. That ph reading may be skewed by the high FC reading. Spa should be fine.
Nope, it's fine. As the CYA goes up you need to raise the FC level to attain the same sanitizing properties. When my CYA was 200+ I had to keep my FC in the 18-20 range.
How much Pool School have you read? These should make it clearer:
ABCs of Water Chemistry
Recommended Pool Chemicals
How to Chlorinate Your Pool
How much Pool School have you read? These should make it clearer:
ABCs of Water Chemistry
Recommended Pool Chemicals
How to Chlorinate Your Pool