During the production process of growing substrates all micro life is destroyed/sterilized so that no harmful elements remain. The problem with this approach is that also the beneficial elements are destroyed. This makes the substrate more susceptible to pests and diseases. It is important to have a rich beneficial micro life in the substrate to prevent problems and to optimise growing conditions. Accumulated salts are decomposed by enzymes that are produced by beneficial bacteria. Root systems are protected by beneficial micro organisms from harmful micro organisms. By adding Micromix a rich beneficial soil life is created that offers optimal growing conditions in the substrate.