A good plant would be any of the Anubias species. I had these once with my 55 gallon and 30 watts of light. The only down side is they only get about 1 leaf a month. As far as fertilizers I don't think you'll need any. If you have cichlids use a rubber band and rap it to a rock or drift wood. for spliting the plant in two, just cut the whole plant in half. This plant likes to attach itself to the gravel with it's roots so if it get's loose it souldn't float like other plants. good luck!!!