I noticed that when I want to adjust my pH, the value of what I need to add changes depending on my TA. So my question is this... If I see that my pH is low and I want to adjust it accordingly, should I first test my TA. That way, I enter the correct TA value before it calculates how much Borax I need to add? I don't test my TA everyday, but I do check my pH every so often.