Hello, I'm a semi experienced outdoor grower here in Nor Cal and after this years crop, planning for next year I'd like to learn how to make a super soil for 20- 100 gal pots. I've come across countless recipes for very small batches but after the arm and a leg I spent this year on pallets I know there has to be a better way. Can someone point me in the right direction? Will my local feeds potting soil and compost do instead of black gold? Thanks for any help in advance.