There is no clear evidence they do well in either intense or medium lighting set ups. From what I've read, it's pretty hit and miss one way or the other. They do like med flow and primarily come from lagoonal reef systems very high in nutrient.
If the polyps are extending and the coral looks healthy I would leave it where it is for now. As far as feedings I would rely on blender mush for the most part with phytoplankton. Just watch the water quality.
Cheers
Steve