I actually called it "macro", and that is short for macroalgae...there are lots of different kinds and uses - Gracilaria (or Ogo - as its called in Hawaii) is a good food source for herbivorous fish (like your tang). ZenReef sells it (see our sponsor list), and I believe FinAddict keeps it in stock frequently. There are other kinds that your fish will eat also, but you'll have to experiment to see which one it likes best. Chaeto is another type of macro that is great for usage in a refugium or even somewhere in your display (if you don't have a 'fuge)...almost all macro can be used in this way as a biological filter - IOW, as it grows, it sucks up excess phosphates and nitrates from your water.Originally Posted by EXVISOR13
W.
