My TA went from the low 100's (100-107ppm) to 194ppm this morning !? I test the TA everyday, so, this was a surprise. I re-tested it in different areas (pump runs 24/7), and still came up with results greater than 120ppm.
The pH was a 7.4, FC: 3.06, TC: 3.23, CH: 300.
This is a plaster pool, and the pH control is Co2. I understand that Co2 has a tendency to increase the TA, but, if in fact this is a true TA reading, how dud it suddey shoot up that high?!
My test kit is the LaMotte ColorQ-pro 7. The vials are brand new as are the reagents. The light chamber is also clean.
This just seems very bizarre, could it be my test kit? This has never occured.