Calculating output from SWG

[doublewide6]

Hello,
I am trying to figure out how much FC my SWG generates in a 12 hour shift. I used pool math and I typed in 1.28 Lbs of "chlorine gas" and I am wondering if that calculation is showing me how much FC I get in 24hrs? I'm getting about 6.2 FC for a 24,000K pool on a 24hr. shift? Is this correct?

 

[ajw22]

I get 7ppm in 24 hours and 3.5 ppm in 12 hours.

 

[doublewide6]

Thanks, it seems I was calculating it correctly.