Bi Growmix is an organically fertilized soil, the structure of which is very loose and free of harmful molds. This makes for a very good subsoil for successful breeding. The plants can take root on it in the initial phase and then continue to develop in size. As for the amount and proportion of fertilizers, this substrate can be seen as a medium. This means that a starter food is added to Bi Growmix. After this starting period (depending on the number of plants and pot size), Atami recommends topping up the crop with liquid fertilizer for optimal results.