Thanks for the quick response.
Yes, Taylor k2006. Received it Tuesday and put it straight to use.
pH is 7.4
I have 54" pool wall and I keep my water depth at 50". My calc gave me 26,670 with that depth. Sound right?

Last question for now, pool solutions.com recommends polyquat 60 as an algecide but I can't really find much on frequency of use. Should I add at start-up?