People tend to "shake" the food into the aquarium when feeding. This practice is not recommended because doing this will give you less control over the amount that goes in the water. Often, much more gets poured in than intended. Instead, take a pinch of food between the index finger and thumb, and sprinkle it across the top of the water. If you have a lot of mid-water feeders you may want to wet the flakes in your fingers and then release them.