I ran into mag deficiency about a week, week and a half ago. Thought it was mites at first, then got cal/mg and the problem went away super quick on all 3 of my plants. Now out of nowhere its starting to have little brown/black dots starting again. I was hoping to get a second opinion, I upped the dose of nutes for her ( i hope) from 155 to 345 ppm. You think by adding more cal/mg and other nutes (GH Grow Micro Bloom, as well as GH Rapid Start & GH CALiMAGic) it will remedy this? When dealing with mg def do you have to continually add a higher dose of mg/cal to prevent? Also the strain pictured is Bodhi Dream lotus. The yellowing and tip burn is from the def a week ago. The little spots which is on 3 or 4 leaves now is the first sign Currently veggin em under 4 bulb t5 216 watt 24/7 80 F 50% Humidity good air flow with two fans I just found this as well, on a diff plant. Shes a afghan kush x white widow. Looks like a bug went to town on one set of leaves, no other sets have been affected. I looked closely and could not find anything to indicate a bug/mite. Maybe just bad genetics? It is a freebie i got in the mail with the tude.