I just talked to a friend of mine that has a 55G and has battled higher nitrates. I kept telling him he could really use a refugium/macro algea to help.
He didn't want to tear down his tank to get it drilled. He bought one of those overflows and had it up n running in about 10 minutes or so.
His results were just like mine after getting the fuge going... nitrates dropped like a stone....red slime what?
I asked him to send pics to me...i'll try to post them... if he ever sends them...