A newb here, but been lurking for a couple of weeks.
My TF100 came yesterday, and my numbers are good except for no CYA. I was using the frog last year, but am converting to the BBB.
I need to shock, and bring up my CYA, can I do this at the same time?
also I notce a difference in shock levels between chemgeeks, and ben's charts, does one seem to be more accurate than the other?
Also look at my notes on the TA test. did I do it right?
24' AGP, 13,500 gal.
PH- didnt test yesterday, was 7.2 last week after filling for opening
TA-130-150 (test turned light purple after 13 drops, fuller purple at 15, no change at 17)
CYA- can still see the dot at 20, I will have the pool store test this afternoon