Jack Herer CropKings Auto

The buds are really thickening out now. The one plant that had the deficiency is no longer showing any new symptoms but the leaves that had the spots are worse. Im still not too sure what the cause was, upping the bloom nutrient seemed to help. Im confident it isn't rust, the humidity is almost always at 45 and there's a real strong fan in the tent for airflow as well as intake and exhaust. Some purple forming around the leaves I am attributing to genetics or the cold in the room at night. Fed two of them their last dose of nutrients and will begin flushing 2 of them at the next watering. Plant 1 is growing a little slower it seems so I think I will give it another week before I flush it.