Charlotte's Sister, Velvet Bud + more

Ok here we go second grow. Technically the 3rd but my first I lost the whole crop due to not knowing what the hell I was doing. First off sorry about the photographs and that purple light. It's an old COB led reflector light 600 W which I got 460 bucks and it's terrible the flowering but still good enough just to start off veg . I'm just about two weeks of Harvest of my G13 crop. I only did three plants in that run. This time round I'm doing 10 plants. 3 X Charlotte's Sister AutoFem 3 X Velvet Bud 2 X Sherbet 2 X Northern Lights. Put seeds in on 10th of February they've sprouted I think yesterday. I'm using a different soil to last time as the plan was a lime green colour throughout the whole growth and dirt seems to be very rich and if I even so much as put a drop a nutrients in I get signs of overfeeding. so this oil is a low quality so I can play around a bit more with nutrients and keep the nitrogen levels low and stop that lime green colour thing.