Hey guys, very new grower here. In still on my first grow and its getting close to completion. But one of my autos has completely turned a light green while the other seems to be perfectly fine. Growing in a 2x4 steel grow cabinet with 2 small fans. Light source is LEDs with a 18/6 light schedule. I had to pull off a dying fan leaf towards the bottom of her. Please help guys!! We're in flowering and should be ready to harvest in the next couple of weeks.