I put my new TF-100 to use this morning and got the followi g readings:
FC - 21
CC - 0
CYA - 140
CH - 700
TA - 90
PH - 7.4
Previous owners used a trichlor floater. With the high CYA it looks like I need to do a partial drain and fill. I am not seeing any calcium staining even with the high CH level, city water tested at 125 CH.
I think my other numbers looked good. Am I on the right track with wanting to do a partial drain and fill?