Not that I disagree with this advice, but Tums are calcium carbonate (with sugar), whereas blackboard chalk is calcium sulphate (gypsum). It is not likely to be as good for an upset stomach.
Isn’t gypsum used to lower the pH of soil?
Not that I disagree with this advice, but Tums are calcium carbonate (with sugar), whereas blackboard chalk is calcium sulphate (gypsum). It is not likely to be as good for an upset stomach.
Isn’t gypsum used to lower the pH of soil?