Re: Adjusting TA down by 40 ppm when CYA > 100ppm; is this really necesary?
Thank you so much! I do have a concrete pool. Indeed it was the cloudiness that led me to search for an independent source of information after I had shocked the pool with cal hypo. I'm so glad I found you guys. Pool is clear now after following all the recommendations here. Now I want to balance the chemistry and stay on this new, correct path!
Anyway, my original post above was too vague. Please allow me to clarify (no pun intended!).
My TA read 170ppm at the pool store (pH read 7.6), but they said since my CYA is 100ppm, the "true" reading is 130ppm. They said high CYA gives false readings of TA and therefore they subtracted 40ppm when recording my TA result in the computer. Is this bogus?
Since then I have brought my pH and TA down to 7.2 and 130 ppm respectively over about 3 days using muriatic acid. I'm on my way to ph 6.8 so I can begin aerating using my jets in the hot tub that shares water with the main pool. Once my Taylor K-2006c arrives I plan on a complete, independent, non-profit seeking chemical analysis and treatment plan. Thanks again to you wonderful folks for this forum that allows us to break free from pool store dependency!
30,000 gallon, in-ground concrete, 2HP single speed pump, 240 Sq. Ft. Clean and Clear Cartridge Filter.
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