This is my first soilless/soil grow. I'm on day 10 of 12/12. I also feed a 2 part solution(Dutch Master A&B along with a bunch of goodies) I fed last night. And today, my leaves on a few of my plants, are showing signs of lacking of Nitrogen(though they were already showing signs of being hungry, prior). The plants that are showing these signs, are 4 of the one's that I let the soil get dry to the point that the leaves were drooping. So what I'm wondering is, how long does it take for the plants to show signs that their not lacking anything, A few days,or what? Should I wait a couple of days, or should I feed it some more, but just the nutrient highest in Nitrogen? Thanks!