StromataLight Screen Abstract A stromatalite is a tower structure created by microbial biofilm communities as they grow up and are mineralized underneath. In the ancient past this was the dominant visible form of life on shore lines. My idea is to engineer a combination of a tubular bioreactor and bacterial community that will grow a synthetic stromatalite with a programable pattern of colored fluorescent stripes. By placing multiple reactor tubes with different programming next to each other you will have a simple display that can display images and text.