Aloha, now I am as confused as ever about FC and CYA levels. I went to the local pool store to verify my water check methods. My FC and CC and CYA and PH levels were almost the same as the results at the pools store. They were
The lady said the CC to FC difference is because the Chlorine is killing some sort of algae or contaminate and I shud continue back to shock levels. OK I agreed and understood most of the above, ---EXCEPT--
Now she says after shock bring the FC level back down to about 2.0. I asked what about the CYA level and she says it does not matter and has nothing to do with chlorine levels. Now in the pool calculator I should have a goal of 7-12 PPM Chlorine, and I understand here that higher CYA, you need higher levels of Chlorine, etc.
so I am CONFUSED.
A seemingly knowledgeable pool store person does not know the basics of Pool chemistry, yet they seem to have a satisfied clientale or they would not be in business??