Anyone here make their own nutrient solution?

I would like to try my hand at making my own organic hydroponic solution. Anyone have any resources for me to learn from? Maybe even willing to share their own mixture?

if your going organic in hydro, i suggest you use coco.. and alot of coco growers use teas.. there are a list of organic tea recipes in the organics forum. its a sticky there.

Anyone know of some books I could read to understand how to mix my own nutrients? I have a books on Marijuana Botany and Growing but this is more along the lines of breeding and how to set up a grow rather than what these nutrients are actually doing for the plant and what ratios. Is this a trial and error thing or a matter of looking at labels of marijuana specific nutes and coming up with the ingredients and mix your own ratios to see what works?