Hello everyone i am new to this site. I need advice to help this poor little Bonsai flourish. I have had this plant for many years and i just dont know what to do. The tips of the stands turn yellow alot so i just have been clipping them. I dont know how much water or light it needs or fertilizer. Should it be re-potted? If so how do i go about doing that because it has some sort hard gravel on the top. I would so appreciate any help i can get to make this plant beautiful, before i loose it. Thank you very much!