So here's the deal 1st time grow definetly made mistakes but this is what i got and i'm learning from mistakes but im trying to save what i got.... Please responed with whats wrong and how to fix it!!! Im gonna attach pics just want to give a little more info, growing indoors(limited space), using 8 23watt(100) daylight cfl 6500k one blowing fan one exhaust polyshield enclosure with lights on 18hrs and 6 off watering every 7days was giving nutes but stopped 2weeks ago thinking it was nute burn!!! Think theres something else wrong... Also plants will be 3months from sprout in 5days.. 1st i had some brown spots on leaves, then some turn crispy and dry now im noticing edges of leaves are turning purpleish maybe black along whole outline of leaf..Also like i said ive made mistakes but im growing in a mix of MG potting soil, perlite....