Of the 4, Rod's. I feed rods, reef chili, and New life Spectrum pellets at different intervals. Rod's is by far a more complete 'reef' food (fish, corals, inverts etc.) If I want to take care of the fish only, I use the pellets. For just the corals, Reef Chili. Would highly recommend any of the above or a Rod's home brew equivalent. Some people go waaayyy overboard, but I do think it is best to have some variety to fill certain niche feeders. It also really depends on your Fish/Coral/Invert ratio and what kinds of fish.