[paulsilver]

so the question is, with a 210 g reef, and a 75 g refugium attached via the sump, what sort of sand bed would be recommended?

I was leaning toward a Jaubert method, with plenum, but then was talked out of the plenum, then back to it...

So, to plenum or not to plenum, that is the question...

Note that once the refugium is established, I am thinking of adding a 210 fish only to the system... thoughts on this as well would be welcomed... re: sand beds, nutrients, etc.