Thanks for the asistance. I'll put gfo reactor tonight.GFO isn't used to reduce nitrates...
Here's a good reference from Randy Holmes-Farley on how GFO works...
http://www.reefkeeping.com/issues/2004-11/rhf/
I've only used water changes,skimming and husbandy to maintain my nitrates, no experience with turf scrubbers/macro algae or carbon dosing or any commerical products...