Don Geddis wrote:
But sure. "Some" corals have low light requirements.


Black corals need hardly any light. That's why they are found so deep
in the ocean. There are entire coral beds lying in 300 ft of water
where light would be murky at best. These probably live off of marine
snow rather then photosynthesis.

Whether you'd want to keep them in your aquarium, would be a different
question. I'd turn it around and ask what you want to keep, and then go
from there. Zoos and mushrooms are rumored to be the easiest and lowest
light species that commonly kept.

--Kurt