At 1.07 ppm CYA/7 oz puck it should take ~ 9.3 pucks to raise it 10 ppm. We have put 12 pucks in and have not seen the CYA budge. Tests this AM were:

pH 7.4
FC 3.6
CC 0
TA 90
CYA <30 ppm
Temp 83
All with Taylor 2006 kit

Maybe the CYA was lower than we thought (22) to begin with. I just want to "quit with the pucks already" --- they make a black scum ring around the pool and I didn't have that when the CL Pump was in use.

I sure wish there was a different test for CYA -- I just got off the phone with them --- NOPE --- unless you go electronic colorimeter (Taylor doesn't have) and it is still turbidimetric.