I can see bith sides of this issue.In nature,fish feed constantly through the course of a day.Small,frequent feedings would best mimic how fish would feed in nature.I also feel strongly that diet in fish as well as corals is one of the most important factors in keeping them healthy.I do side with Chris on thinking stable/most natural water params are when you have 0's across the board for Nitorgen and Phosphate.I feed my fish daily spirulina flake and corals get fed at least 4times a week at night useing a mixture of mysis,GP's,and CE.That said,I have gona 3-4 days without feed.The fish also eat at night when i feed the corals.I,like Chris,rarely do waterchanges,I rely on heavy skimming and nutrient uptake from corals as my primary means of export.Been doing it this way for years and neither of my 5 reef tanks i've setup have ever had detectable nitrate/phosphate.