the tank is a 300 gallon deep dimension with duel overflows into a 50 gal sump with a coralife 1150 gallon an hour external pump and 1 fx5.. i feed them goldfish everyday which the wolf fish and odoe don't eat.. every other day i feed them either tilapia or shrimp with vita chem.. I'm actually looking to get rid of the silver arrow soon .. just getting too big