I have a 30k gal in ground vinyl pool. I have been using the Lamotte Color Q regents with digital readout for testing.
Since mid Sept, about 6 weeks now, the readings for free chlorine and total chlorine have been identical.
The PH stays stable at 7.4-7.5, the alk stays between 90-105, cya stays stable in low 30's.
I keep 1 chlorine tab in the chlorinator.
Even after I shocked the pool the FC and TC stayed identical at high levels as well as when they worked their way down to lower levels.
The regents aren't old, were purchased earlier this year and stay in the house.
Can anyone explain why these two reading are staying exactly the same?
I have been testing the same way for years and almost always got a slightly different reading between them.
Could it just be the regents are bad or something else?
Or is this not abnormal?