I personally would not feed any dry foods to anything except worms.
Dry foods won't have the essential oils of natural foods, are full of fillers like flour that offer no nutrition and have no living gut bacteria that controls immunity almost 100%.
Just my opinion, but in over 45 years none of my fish have ever been medicated, quarantined or died of any communicable disease and some of them are over 35 years old.
Of course, dry foods won't kill them, it's just not as good and most fish never get dry foods on the reef where they come from.