if your planning on using soil, mix it 2 parts soil with one part coco. I've been running that mix for several grows nows and it works very well. I've also adopted a no till style, I just cut out the stump and replant in the hole. The plant in the pic is the 5th to grow in this auto pot in the same soil. And it is feed a nutrient solution. I'm using Megacrop but other nutrients will work also.