You can find help selecting a grow light in this article that we wrote about the best, as reviewed and rated by succulent lovers. You can check the soil moisture content by digging an inch into the soil using your fingers, or you can purchase a moisture meter. While this is relatively easy to do when you grow the plant indoors it can be more challenging if you are trying to grow it outdoors. Before you go, check this on succulents for sale to make sure there's no water in the container.