Bob, I'm not here to fight with the members. Perhaps someone should start a forum site for people that like to argue endlessly. A quick google of water softener sizing will reveal a whole lot of sites that have charts, formulas, some even let you put your numbers in and it spits out the information. Can you tweak the settings to get better salt efficiency? Sure you can but most folks are not interested in endless arguments or fiddling around with programming, timers and such. They just want the damn thing to work. As far as salt use, I doubt most folks give a hoot whether it goes through a bag or a bag and a quarter. Salt is cheap. I've been using the same sizing formula for 30 years or more. Never had a problem. Never had a complaint. I see little reason to change at this point. I see these forums as a place to help the poster, not argue with each other.