I have done quite a bit of research and am caught in a predicament. From all of the forums I've read it seems as though if I were to get pro mix BX it would be in the plants benefit to mix in dolomite lime, perlite, and earth worm castings. If I were to go with the HP, most forums don't say anything about added ingredients other than a couple forums which state the HP needs some extra dolomite lime. Right now I'm leaning more toward the HP as it is a little cheaper, and it does not contain vermiculite which retains too much water and possibly messes with the pH. What do other growers prefer, HP or BX? I am also growing autoflowers and not transplanting, so I'm starting the seedlings in pro mix, which would be better or are they both about the same? Thanks to anyone who answers!