so im getting two responses, two very good ones, two different ones. the first saying that i have probably not burnt my plants and rather had a def. of a specific kind. others are saying that my ppm is too high. still slightly confused. i just do have to say that at 1600 ppm, how could my plants be having def.? the rest of the info is that im at 8 weeks flowering, and the stress is happening towards the top/ middle of the plant. thanks for all the feedback.