Finding NPK? How?

[smoke headies]

I was wondering how I find out how much NPK I'm using. I see a lot of people post things like.

N 150
P 80
K 54

How do I find my NPK levels? And is there a common "NPK" level for each stage of Marijuana growth? P.S. I know what NPK stands for!

 

[F_T_P!]

I believe you are talking about NPK ppm.

This is a great site that explains NPK ppm and has a spreed sheet to figure out your nutrients NPK ppm. Lots of good info.

http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm

Hope this helps.