Ok, thank you for the update.
You have a humongous pool. Going from 6 to 8ppm (the target you should be using for 50ppm CYA) I'm showing will take 89oz a day, which is more than half a jug of chlorine. I'd say your burn rate is on target, and will likely go up a bit as the sun gets stronger/summer gets hotter this year.
You have a humongous pool. Going from 6 to 8ppm (the target you should be using for 50ppm CYA) I'm showing will take 89oz a day, which is more than half a jug of chlorine. I'd say your burn rate is on target, and will likely go up a bit as the sun gets stronger/summer gets hotter this year.