Coco coir buffering removes water soluble elements and other elements which are naturally bound to the cation exchange complex. During the buffering process, coco coir cation exchange complex is saturated with a solution of calcium nitrate for an extended period. The absorbed calcium displaces the residual potassium and sodium in the complex, which is washed away. The buffering process also reduces problems with nitrogen draw-down that would occur in non-buffered coco peat.