My numbers are
TH - 20
FC - 0
PH - 7.5
TA - 120
CYA - 45
I have used a few different testing kits the HTH test kit, the HTH test strips and another liquid test kit the I can't remember the name of. All have the same readings
I have a 24' round 52" deep above ground pool.
I use borax, baking soda, liquid bleach and chlorine tablet.
Since I changed to using these products I have never had a problem until this year.

vanman2501