Ok
I was an expert last year after a green pool opening after spending every evening reading here.
I have a 20,000 vinyl IG pool.
I started to get cloudy water yesterday. My FC levels were low Thursday eve so I decided to shock with cal hypo. 1.5 bags 68% cal hypo.
So Friday about 5 pm pool getting cloudy and FC at .5.
Ph about 7.2, hardness 140, Alk 70. CYA was about 40 last week
I added 3- .75 gallons of ultra beach. I also added about 2 lbs of borax.
Late last night FC at 8. Today, ph is 7.4, FC is 3 despite two more .75 gallon bottles of bleach. I backwashed again ( sand filter).

I am going in the right direction? How much bleach should I add tonight?

Thanks \\

Mike