i am kinda new at this my self but from checking the Grow FAQs + comprehensive faqs it looks like ph or an mg prob..you should check it out lots of info there
bigjohnson688 Reviewed by bigjohnson688 on . PLEASE HELP MY PLANTS! What is this??? NYC DIESEL These are one week NYC Diesel Seeds from Soma..60% sativa 40% indica. I see a rusty color on these leaves, I suspect nutrient deficiency but i have no idea, thats what i have just found by reading my books. I really need help from some of the Mods. It also could be "bruising"? i have touched the leafs a bit to get soil off. Or even Manganese deff? T-5 Lamp Fox Farm Oceanic Soil PH at 6.5 Feeding water and 5ML of Diamond Nector with a 1/4 tsp of Super Thrive all in a one gallon res. Rating: 5