I have always been a fan of NLS, Xtreme, Neptune, and Kens but have been wondering what everyone is using these days to feed there fish for optimal color and health? I have read online that Northfin is one of the top foods and many people are saying it’s the best? I have always treated my fish with occasional spirulina brine shrimp/mysis shrimp/krill. Anything I should change and what’s everyone’s favorite food? Thanks everyone for your input!