8500 gal SWG vinyl pool
Water temp 53F
Following stats using Taylor K-2006 kit
Salt per swg when water was 56F 3200PPM
FC 0
pH 7.8 close to 8.0
CYA 33ish
Borates approx 60
So here's my confusion. I went to test the FC filled up to 10mL mark added two dippers of R870. Zero reaction no pink hint...