Well I couldn't say how much of either is in it..I put 2 handfuls of epsom in my soil mix that was about 1 MTR square and some dolomite and gypsum but mixed that with natural sand and soil . I've also top dressed with gypsum the other day. Do you think I should do a sprinkle of epsom again because it's so water soluble? or just leave it as I cant see any deficiency? . Haven't seeny plants in more than a week but my "grow partner "said they have hit the dog mesh and look lush so I'm guessing there pumping along