mag will help raise your calcium if you have problems getting it up by making magnesium chloride i believe....since it will help your calcium go up it will drive your alk down....but to keep all in check is a tricky game you have to play until you figure out how your system works....i dose mag once a week and calcium a few times a week...calcium is usually 480-500 alk around 8 dkh dont have a test for mag