Hey man, I really love how simple you make everything. I was wandering if you could maybe explain PPM's to me, how to regulate or adjust PPM's, and whatnot? I know alot about growing from past grows, but I really want a pure understanding of every aspect. And PPM's is 1 thing I know nothing about. I just add nutes on a whim due to my lack of true understanding. I hope to hear back from you, and thank you for your time.