The forum as told me that with high CYA PH can read higher then it really is.Is there a correction factor that will allow me to gauge my true PH? I am working on my CYA but it is 125-130 and my PH measures at 7.5. What is it really?
Wildcat said:The forum as told me that with high CYA PH can read higher then it really is.Is there a correction factor that will allow me to gauge my true PH? I am working on my CYA but it is 125-130 and my PH measures at 7.5. What is it really?
7.4 and 100JamesW said:I have found that the pH reads accurately when the fc is below 15 percent of CYA and is read right away.
What are your current pH and TA readings?
Wildcat said:http://www.troublefreepool.com/ph-at-high-fc-levels-t11428.html
I should have done a search before asking my question. I actually understand most of the answer. But where is a chlorphenol color chart to be found? It seems to say that allows a reading even at high FC
I guess I thought it was best to maintain my target level than the minimum. I think target level fo rmy CYA of around 125 is 16. Maybe I'll let it drop to the minimum in order to check the PH and then bring it up some to be safe.JamesW said:Most likely the pH reading is correct. For your cya, you can maintain an fc of 9.5, which will help you obtain a more reliable ph reading.
Yes, that is what I inferred also, that with my TA PH is probably about right.JamesW said:For your CYA, I would keep the FC in the 10 to 20 range, but as close to 10 ppm as possible without going under.
The risk is that if the pH is reading a false high due to high chlorine, then the pH might be too low. However, based on the TA, I don't think that it is.