In the immortal words (about the only words!) of Keanu Reeves:
Woah!
That's some serious algae -- pictures are SO helpful to letting us see just what you are dealing with.

You've got a concrete pool, and a PF:8. Each gallon of plain 6% bleach will add about 4 ppm of chlorine to your pool. So, Monday evening, add 15 gallons of bleach to your pool -- about 60 ppm, and plan to add 8 more the following evening.

Don't mess around -- you don't want to wrestle with your algae; you want to kill.

BUT . . . if at all possible lower your pH tomorrow AM -- try 1/2 gallon of muriatic acid (see guide linked in my blue signature!) and see if that will get your pH below 7.8, before your start dumping all that bleach in.