Give him some pellets every day, every other day give raw shrimp or squid or clams. I get a big bag of raw shrimp from Costco for about $22 and it last about a month and a half feeding all my big fish 3 times a week. Don't waste your time on most of those cubed foods from lfs, except If you can get some PE Mysis, I feed that a few times a week, it's very high in protein.