I usually grow 4 plants at a time, but I have been having mg deficiencies issue. I cut back my plants to one veg and one flower until I get a better handle on this. I grow very small plants because I was living in an apartment and growing on the upper deck. I just bought a house and plan on growing bigger plants, but I need to fix the mg issue. I have been posting my pics on the sick plants and problem section as I did last night. Mg deficiencies is what everybody tells me. Do I mix the magnesium in one gal of my f/f nutes, this means that every time I feed them they get mg, or do I make up 1 gal of water and feed her once. I use happy frog for soil which had dolomite. I will use magnesium to see if it helps and will pick up Cal/Mag next time I go to my favorite store. I hope I cleared up some things. Thanks.