In this Video, the Doc shows you how to transfer your starter plug into a larger grow pot. He uses a Coir Soil mixture under and around the Starter Plug. Coir prevents the soil from turning to mud, but instead it will keep the soil nice and moist. Be sure to put some of the Coir mixture at the bottom of your new grow pot, since the roots need the room to grow down. You want the soil to be equal to the top of the roots or at the same level as the starter plug.