<a href=showthread.php?s=&postid=13002289#post13002289 target=_blank>Originally posted</a> by Toddrtrex
The only reason I could see Alk getting out of balance from the Cal is if you aren't dosing the same amount of each -- which I doubt. Or if your salt mix is low on Alk, which would explain why you are seeing this.
Suggest you test the alk of a freshly ( mixing for 24 hours ) made up salt water.