I have small live rock pieces,chaeto, gracliera and some caulerpa macros in my fuge. So far I have been running 0 nitrates and it's been in place about 6 months. Compared to the 55g I have that has no fuge it's a marked improvement and I'm very pleased with it.
I do have a pretty large area though, I think the larger the area of substrate and larger amount of macro will yield better results in comparison to a limited fuge area.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.