I will add my thoughts:
~
PWC are the best way to lower ammonia and nitrites
~Read the article regarding the nitrogen cycle in the articles section
~Do not add any chemicals to the tank other then dechlor
~Those cichlids can easily be fed every other day for their entire life (check my gallery for proof

)
~Adult brine shrimp has the nutrients of a candy bar; although, most frozen foods add vitamins
~Your fish are herbivores!! They will take protein when they can get it, but it should NOT be a large part of their diet--a
tiny,
tiny part is more like it. My Mbuna cichlids love blanched, peeled peas, cucumber, and zucchini