IMO a carbon source and STN / RTN is not a good idea. I do not think any ones really know what STN is but I believe it is bacterial. A carbon source will encourage both good and bacterial growth. Also Acros really do not like GFO my Acros always do better when I do not need GFO. You may want to think about a fuge, algae reactor, scubber or some form of algae driven nutrient export.


