So I was reading one of my organic books and was learning how sulfur effects color, smell and flavor and was wondering who adds gypsum to there soil and how much I should add to a 1.5 cf bag and should I cut back on my lime when I add it. I am running a 2 layer soil set up similar to how one grows using super soil and am thinking of adding it to the lower layer for the bloom cycle to see of it increases terpenes.