Started lurking late last year, gonna get on the BBB method this year, a little info for starters.
Located in northwest Indiana
24' dia above ground, 48" side walls, expandable liner down to 6' foor in the center. Figured about 13,500 gals in the 24' X 4' main body, extra depth will give me a little cushion on chemicals until i get dialed in.
Hayward 250# sand filter, 1hp hayward pump
I also have a main drain.

Used the silly test strips for the last 8 to 10 years, always seemed to have problems at the end of summer. Late July thru August until closing i would usually fight outbreaks of alge, don't wanna do that no more.

Ordered a Taylor K2006C last nite, pulled a sample of water from under the cover last weekend. from what i can tell, with a $15 test kit from Meyers numbers as follows, water was clear in the sample i took.
Chlorine ~ 0
PH ~ 7.8 /8.0
Al ~ 120
CYA ~ 0

From the best of my memory when i closed it numbers with the test strips,
Chlorine ~ 5
PH ~ 7.6 / 7.8
Alk ~ 120/142
CYA ~ 50

Looks like the bacteria consumed my chlorine & CYA so i'm ready to start with the chlorine when i get the cover off & filter hooked up & running. A few questions before i get started, like i said it will be a week or 2 before i get it up & running & mother nature needs to be good to me too.
Once i start in with the chlorine & get it to the point i don't lose any overnite, when do i start to introduce CYA into the water?
I know i need to bring my Ph down, but with the high chlorine level i'm gonna need to get rid of the stuff that ate my old chlorine & CYA will be hard to test Ph? do i wait until i have met the overnite requirement for my chlorine level & get my CYA to 30/50 & then adjust my Ph?

Thanks for the help,
Mike