In a 9000 gallon pool, each quart of 6% bleach will raise the chlorine by 2 ppm. 4 quarts per gallon, so a gallon will raise it by 8ppm. (Remember, most jugs of bleach sold these days are not gallons, but only 3 qt. jugs.) What kind of shock are you using, by the way? (ingredients)

With a cya of 40, your shock level for your pool is around 15. So, instead of using "shock" and bleach, why don't you just throw 2 gallons of bleach in there. That should take you up to shock level. Remember, the key to killing algae is to sustain the shock level and not let it yo-yo up and down. Test at least twice per day ( and 3x is even better) and each time, add enough bleach to take it back up to shock level. Also, run the pump 24/7 while you are clearing the pool. If you do this consistently, it will work.

And, welcome to the forum!