I think one part of feeding that is overlooked is also HOW you feed your tank. If you take two extremes in an example... both times you use the same amount of food, but in one instance that food is added all at one time every two days and the other that food is added slowly throughout the whole time. I feel if you add it all at once you will have alot of waste and a relatively low or unhealthy population of "background life" (bacteria, pods, worms, etc). If the food is available more often than it should support healthier larger populations. I noticed a big difference in the overall appearance and health of my fish when I went from feeding once a day to feeding 4-5 times a day. I dont expect everyone to want to feed their tanks that often, just think that the impact it could have on our tanks is worth more thought and discussion.
Rick
Rick