Well hopefully one of the resident pros can back me up on this, but I am 99.9% sure what you have there is bad nute burn. I have a DWC that I was feeding too hard and the leaves started to look exactly like that, dry, rusted looking, and crispy with the edges curling up. I lowered my PPMs and the problem went away. The fact that you are feeding all those different kinds of ferts also leads to this conclusion.

Compare this picture: http://www.marijuana-seeds.net/Thanks/nute_burn01.jpg

With your first post of pictures. They look the exact same, and look the exact same as the nute burn I experienced with mine. The other two sets look different from nute burn but I would assume it is burn or lockout of some kind due to over feeding.

You obviously have nute burn on the first set of pics and/or lockout in the rest, and you need to flush with water only for a while until things straighten back out. The third group of pictures you can tell they are being fed too hard if you look at how the tips of the leaves are starting to curl under and the edges are getting crispy. These are the first signs of over feeding.

You should also probably know the PPM of the nute solution you are feeding, as I find that most recommended doses of nutrients on the back of the jug are way too high. When I first started I followed the directions on the jug and ended up with like 2,000 PPM (way too high). Might also want to use nutrients that are for soil and not hydro. I am sure they make nutrients for different applications for a reason.

Good luck! :jointsmile:
dejayou30 Reviewed by dejayou30 on . help my plants are dying... high quality pics. hey guys, ive been posting on mulitple forums and still not a single person knows whats going on in the tent here... heres the story and details... 400wMH 14-24inches, in a homebox tent. 18/6 in happy frog soil. many different brands of fertilizer, all high grade stuff.. i am using R/o water, and i add 1 tsp/calmag/gallon Rating: 5