It also allows, you to observe the fish as they are feeding. Sinking feed will only fall through the cage and not eaten by the fish wasted feed. Always remember to fit the pellet size to the fish's mouth. Oxygen will be at high levels between midmorning to late afternoon. It is important to be consistent with the feeding schedule.
Fish become accustomed to it.
When adjusting feeding schedules, make the change gradual. This is especially true of small fish. A general rule of thumb is to feed fish all they will eat in 10 to 30 minutes when within the optimum temperature range. Overfeeding wastes feed and money, and can cause water quality deterioration which will lead to stress and disease. Underfeeding will reduce the growth rate.