Hiya doc, I have noticed that in the summer months I use esv bi ionic and everything is predictable and stable, in the fall and winter months when the house is closed up I use Kalk instead of bi ionic to help with elevated ph. My quandary is that I really have to keep up with mg supplement while I ditch the bi ionic for the winter. Does bi ionic have mg salts in it? ...or does Kalk strip away mg?.... thanx n stuff...zsu