I got a big bail of Canadian peat, 3 bags of cow manure, big bag of perlite, small bag vermiculite, some roots organic bat guano, and 5 big bags of (I forget the name) organic potting soil with worm castings.
I mixed it all up in a baby pool and got it moist with water from my koi pond(figured that would help add microbes and other good stuff to get it going).
Let it sit for 5 weeks.
Then I got all the soil in six 10 gallon grow bags and watered it with a mix of roots organics buddah grow, trinity, and catalyst, also added kelp meal and blackstrap mollases. That's been cooking for about a week.
Gonna transplant my girls at the end of the week into the 10 grow bags/soil mix. I didn't measure anything, did it all by eye and my mix is nice and spongy and drains good but holds water good too. I'm still a newb at making my own organic soils but I'm confident my mix will be good.