Yes it is possible but what I'm wondering is why you would want them down there instead of in your display tank. <img src="graemlins//confused.gif" border="0" alt="[confused]" />
I've seen a link to someones tank on here that had two sump/refugiums with it that each had vho and/or mh lights on them and he kept his frags in there.
reason they are in a seperate tank
they grow fast and soon take over your main tank
if you don't mind working on caulerpa every week, i don't think it is a problem.
to me, I rather use the empty space for other coral then the calerpa macroalgea
