In my personal opinion growing soil with coco is not needed and cause more problems for the growers. As long as you keep an eye on the PH you wont have any problems adding recommended nutrients (botanicare in my case.) Soil just adds too many variables that even veteran growers run into problems with it. Coco is sweet and simple and anyone that can read can use it successfully. I am not saying that there are not great growers using soil I just believe coco is the least pain in the ass method. I dont have to add bat shit or bannana peels and guess how much my plant wants to eat it just gets whats on the label and until I got lazy checking my PH i did not have any problems.