Hi! RO'ed about 2 months ago now and maintaining a FC of 3 with liq chlorine. I had a CYA of about 40-45 when the RO finished. Now, I did a test and I get two results. My Taylor kit gives me about 50 for CYA and a larger comparator tube test with the Blue Devil kit (https://www.amazon.com/Blue-Devil-B7524C-Cyanuric-Acid/dp/B00JDHOP8Y) shows me at about 30! I'll see what my pool store says (why not?!)
FC = 4.4 (just installed Liquidator, still dialing it in using 10% HDX brand liq chlorine)
CC = >0.2
pH = 7.8 - acid demand tests suggests about 2Qt Muriatic acid to get me to 7.5. I used to be about 7.6 after the RO
TA = 80-85
CH = 85-90
CSI = -0.22 (according to pool math)
My CH should be what, about 200? How do I raise this without raising pH? Should I use CalHype chlorine pucks for a while?
CSI is ok it seems (plaster/concrete pool)
I'm mostly concerned with CYA readings being so different between the two tests. The Taylor kit has always shown about 50 while the Blue Devil was about 40 when I finished the RO. Now, after two tests using beoth kits, I'm confused as to which I should use. To be fair, I ran out of Taylor CYA reagent, so I used the Blue Devil refill reagent in the Taylor test, is that bad?
FC = 4.4 (just installed Liquidator, still dialing it in using 10% HDX brand liq chlorine)
CC = >0.2
pH = 7.8 - acid demand tests suggests about 2Qt Muriatic acid to get me to 7.5. I used to be about 7.6 after the RO
TA = 80-85
CH = 85-90
CSI = -0.22 (according to pool math)
My CH should be what, about 200? How do I raise this without raising pH? Should I use CalHype chlorine pucks for a while?
CSI is ok it seems (plaster/concrete pool)
I'm mostly concerned with CYA readings being so different between the two tests. The Taylor kit has always shown about 50 while the Blue Devil was about 40 when I finished the RO. Now, after two tests using beoth kits, I'm confused as to which I should use. To be fair, I ran out of Taylor CYA reagent, so I used the Blue Devil refill reagent in the Taylor test, is that bad?