Quote Originally Posted by ziggyrocket
I am thinking about going with caulerpa prolifera...anybody have experience with it?
C.prolifera sends out runners and grows in rows on the substrate. I would say at 48" deep you would be hard pressed to find any light that will punch down from the top. It might grow up rocks and such but I am used to seeing it grow on the sand.

I'd just grow macro algaes for looks and maybe put some fake gorgonians or something towards the top for them to latch onto.