just in the past few days our plants older leaves started to form brown-rust colored spots what the hell r they from?
been wrong before but,,,, lemmie guess. your almost done flowering?(around 6 weeks?) your plants are bigger and closer to the light.prolly dying? little hot? prolly use alot of nutes (it happens all the time), so hard to measure properly. did it start with one or two now three or four maybe six? do you flush regurlarly? completely change res frequently? do you garden outside or have dogs or alot of trees around? do you clean off before entering your laboratory? just the facts man.
