I used PoolMath to calculate how much salt I need to get up to 3000 PPM.
According to PoolMath to go from 2400 to 3000 PPM I need 65 lbs for 13,000 gallons.
I added 40 lbs in the shallow end with the SWG set to 0% and brushed it toward the deep end and left the pumps run for a couple hours. I kicked on the SWG when I could no longer see any visible salt at the bottom and it's reporting I'm at 2600 PPM. According to PoolMath to go from 2400 PPM to 2600 PPM I need just 22 lbs of salt, but I added 40 lbs!
Is my mix just not homogenous yet or is poolmath broken or something? I don't want to add the other 15 lbs until I am sure of what's in my pool presently.