Well, I was starting to worry that my CSI was too high at 0.45 according to the circular dial calculator that came with my Taylor 2006 kit, which cautions against CSI over 0.5, so I'm getting close. But then I plugged the same numbers into The Pool Calculator and got a CSI of 0.39, which says I don't have to worry about it until it's over 0.6. I'm confused.
Why are they different, or is this difference really not that much? If it's important, which one is correct? Also: could this be the result of not enough salt in my water softener?
Thanks for your expert input!