From Pool School:
"If you are using trichlor tablets for chlorine, follow the bleach recommendations but have TA around 100-120 and be sure it doesn't fall below 100."
I use 12% Chlorine to chlorinate, but I am curious about the above statement. Does it have to do with the acid lowering PH in the tabs?
I am in Canada, and so I have only the OTO test kit, but I am doing a good job on the pool (if I do say so myself!). All levels are great, and my pool store actually does a decent / consistent job testing from what I have seen, i nthe 2-3 times per year I get them to test. usually I want to know CYA and TA. My TA always runs around 90-100, but when it is under 100, they always suggest to increase it, which I never do. I wonder if it relates to the above, and the assumption I am using tabs, although I suspect they don't really understand why they recommend it should be higher. Their own printout recommends 80-120, but they say it's wrong...lol.
Just a curiousity.