The YWG will definitely need access to a meaty food source outside of what is in a 'fuge. Go with LRS Reef Frenzy, less gross filler material going in your tank and it's a good all around food source (corals, inverts, and fish). It's an all in one diversified omnivore diet (heck even my Yellow Tang and One Spot Foxface, which were supposedly dedicated herbivores loved it). Here is what it has in one food source: