I’m growing gsc and norther lights They are under a 1000w de nanolux maxpar mh using a yield lab ballast Humidity is at 45% temps are at 79 degrees Medium is a organic living soil very high quality I’ve been having these problems for some time the leaves are cupping and looking like they are lacking some major N in there life. I’ve taken the following steps I’ve raised the light for a week didn’t change anything I cut back on watering didn’t change anything I feed them with some general hydroponics grow Didn’t change anything. They have great roots really white. My growth has also slowed down The first picture is a norther lights that looks like it’s lacking nitrogen. One thing I was doing was ph my water to 6.5 I’ve been reading lots of threads on here where that is not recommended in good soil. I appreciate all your help and advice.