you don't need a refugium. Ever since i removed the fuge and chaeto, my tank has been doing so much better. Fuge collects all kinds of crap and can be a breeding ground for nuisance algae. I know people use refugium successfully but i think its a waste unless you have a really large tank like 200+ gallons.
I added a bag of PURA PhosLock and a bag of Seachem Purigen to the sump where the skimmer exits. I also have a bag of activated carbon. Nitrates and phosphates are non-existent.
I think this PURA is the best phophate remover out there. You need very little, and each time it lasts 4-6 months..
purigen is renewable, it can be cleaned and reused to remove organic waste.