My fiancee and I bought some Lucky Bamboo for our wedding centre pieces. Right now I just have it in some water in a vase. Should I add some rock etc for it? Also would these plants flourish if I were to put them in an inch or 2 of gravel, then fill up 4-6 inches with water and put 2-3 fish in the container? Or would they eventually die/rot (if the leaves were above water level? Thanks for any help you an give me!!