I lost my first plant to unknown cause and now my second plant looks like it is doing the same thing. I am running 400W MH 16/8, res temp around 70, air temp between 81 (lights on) and 65 (lights off), PH 5.8-6.1, i dont know my PPM and i am using a 3 Gal bucket with 3" nets pots and hydroton...