My Ph is at 7.6, Fc at 7, TA I just bumped up from 50 a bit. Waiting to test again.

Now I have these HTH 3in tablets that I;m not sure if I should use, or just stay with the bleach and a powdered stabilizer, but the tablets contain:

trichloro-s-triazinetrione 93.6%
zinc sulfate 3.5%
other ingredient 2.9%

available chlorine 84%

as for this statement "As far as the CYA level goes, as long as you follow the Best Guess table to match chlorine levels to CYA levels, you'll be fine."

What is the Best guess table?


thanks