Mother Earth¨ Coco substrate contains the highest-quality mix of coco pith and coco fiber. Mother Earth¨ Coco is pre-buffered and pH adjusted to neutral at 6.3Ð6.8. For an optimal hydroponic media, combine Mother Earth¨ Coco with Mother Earth¨ Hydroton¨ or Perlite for increased production. This is uncharged inert media.