I love O.F. and have used it raw for many grows but it's expensive and if your growing a field of vegges and cana you need to make your own soil. I am using 2 bags O.F. with compost and perlite. The compost is free and I can get as much a s needed. Just test the compost p.h. level and add...
Due to the price for OF and since it comes with fert. in it, I do amend the OF with compost n perlite with some grounded dolomite lime for ph. At $22 per 1.5 c.ft. and all the 5 gl. or 10 gl. buckets to fill cut it without damaging it I say.