I can order cal mag, but can't find it local. I pH my water religiously and check runoff regularly. The girls are super skunk. Growing in ocean forest and using the fox farms trio. I am showing both a calcium and iron deficiency. I account it to the fact that I am using distilled water, thereby cutting out many of the minor minerals I would get in tap water. Ladies vegged 8 weeks and now in second week of flower. Used LST, ScrOG, and defoliation techniques.