pellets / sticks are a better way to go than flakes, they typically more nutrient dense.... but the guidelines are still good... lets say,if your feeding 1/2 cup of food a day, it's better to divie up that 1/2 cup into 3 or 4 servings rather than 1 or 2. ...this helps avoid spikes in the ammonia and nitrites. it is a lesser, more consistant load on the bio filter(s). and our fish dont have stomachs, their digestive tract is a straight shot basically. so they cant realy store the food and take their time digesting it. so the more you feed at a time the more potential nutrition is not absorbed, and utilized. its wasted and just put into the water volume. the lighter feedings allow plants to use up a higher percentage of the available nutrients as well. leaving less for algeas to feed on.