How aggressive are the yellow tangs? Will they pose any threat to other fishes especially tang in general? Liveaquaria.com. says they are semi-aggressive and some people also reckon they attack other fishes. Anyone can comment before I add one of this into my tank please?
Also is it possible to keep nitrate at zero in a FOWLR tank? Or they are always presence in the tank? What is the safe level for NO3 for a fish only tank? How high can they tolerate NO3 to?
Also is it possible to keep nitrate at zero in a FOWLR tank? Or they are always presence in the tank? What is the safe level for NO3 for a fish only tank? How high can they tolerate NO3 to?