Triggers, like most aggressive fish, will do best with a wide variety of meaty foods. For my Humu (and once Niger) along with my Lunare, Passer Angel and Sharpnose Puffer I have my freezer stocked - Krill, large and small silversides, clams, squid, plankton, angel/trigger formula, formula VHP, beef hearts, Prime Reef, mysis, brine, and spirulina. In addition I put seaweed in once a week, which everyone including the puffer and trigger gobble down within a day. Once a month I get two raw littleneck clams and two raw mussles from the grocery store - crack them open and watch the frenzy. I also will do a 1oz portion of live brine once a month.
I have the fattest, healthiest (is that an oxymoron?) fishies
Upon first addition of my Sharpnose, he took a large bite out of the gill area of my Passer (look really bad and fleshy)...within a week you could tell anything had happened. Not to mention, I run ZERO nitrates in my tank even with feeding twice a day - I do stock the tank once a month with various hermits and snails, urchins and starfish to serve as clean up and live food