They're filter feeders with little symbiotic algae, so lighting isnt important but flow is. Having kept them before, they need to be fed, never, ever exposed to air and placed in an area of good but not direct flow. In most aquariums that have coral, the water is too clean for them and they starve within a few months. They thrive better in a sump frankly. They will have to be fed occasionally, but if you work at it they can live forever.