I was under the impression that you were to keep the ppm's of nutrients around these ranges:
N 20-30ppm
P 1-4ppm
K 20-30ppm
Mg 10-15ppm
Ca 10-15ppm
Micro's .5ppm Fe


I add 20ppm K , 20ppm NO3, and 2ppm PO4, .5ppm Fe 3xWeekly. Am I only supposed to add enough of these values to reach a total of these ppm's weekly?

I think I'm doing this right I just wanted to make sure Sorry for the obvious question.

Thanks,
Creighton