it really depends on what type of africans you are keeping.
mbuna are herbivores and should be fed veggie flake or pellets, spirulina or NLS. The can also be fed fresh veggies like cucumber, zuchini or lettuce. Limit their protein intake nothing higher than 40-45 %
peacocks NLS or a high quality pellet, occasional frozen brine shrimp or live food
I like to mix it up..right now I'm mostly keeping mbuna so i feed a high quality veggie flake, and NLS thera A. My mbuna fry I feed veggie flakes, decapsulated brine shrimp eggs, and golden pearls.
for my tropicals I use Omega one..I like their ingredients, no fish meal like some of the lower quality brands