Quote Originally Posted by mbar
I don't know of any other one that is made specifically for salt pools. I just don't know why it would matter what kind of sequestering agent you use, it seems that they only need to sequester the metals. I don't have a swg though - maybe Evan (Waterbear) will answer this, he has a swg

How many gallons is your pool? 9oz a week sound like a lot.
According to the literature from Jack's Magic the purple stuff is supposed to be effective at the higher TDS in a salt water pool. IMHO, Proteam's Meta Magic works just as well and is a bit less expensive (but not much). We sell it for a dollar a bottle less.