Are you adding any vitamins or fats? Brine shrimp, unless thoroughly gut loaded, are not very nutritious. Not sure on the type of pellets you use but in my book, that isn't good nutrition. If you're going to only feed one kind of live (now dead) food, I would choose Mysis shrimp over Brine. NLS pellets are my favorite and i alternate that back and forth with Larry Reef Frenzy.