I have them in super soil, bottom half is roots organic mixed w earthworm castings, bone blood meal, bat guano, garden lime, and Epson salts, plus a little bit of joba organic fertilizer, which is mostly bone meal if I remember correctly but had a lot of beneficial in it. I made one bag so I took subcools recipe and divided by 8, then cut down a bit more trying to play it safe. The top half is ffhf