We here I go again. Having the same browning issue as last three grows. This grow is in Kindsoil with FFOF to rule out nute lockout. Have had exact same issue for the last four grows. Have ruled out nute lockout, water PH has been 6.5, temps in high 70's with humidity in upper 40's until flower, then lowered to low 40's upper 30's. The only constant between all these grows are they have been autos (have had no issues with photo grows) and 315 LEC light. All seeds came from same breeder and order so could it be contaminated seeds? Could it be a bad LEC bulb (notice lines in photo)? Have been asking and researching this issue for well over 1 1/2 years and can't find the root problem. About three weeks from harvest and yields have differently been low. Really frustrated and will go back to a photo grow next but if this issue continues I going to sell all my equipment and just go to DC and buy on the street!