Leddy Tube has three light modes: Day, Daybreak and Night. In Day mode, the light is basic and strongest, it is primarily usd to illuminate the aquarium during the day. Daybreak Mode – Lighting power is reduced to 50 percent. It can be the first mode after the night and when feeding fish, especially if you are breeding shy species. Night mode is a blue glow that allows you to observe fish after dark. It is perfect for all fish and animals that feed at night. In addition, blue light emphasizes the natural colors of fish and plants, making the aesthetic experience even more pleasant. After a hard day’s work, sit comfortably in the armchair and relax your eyesight while looking at your favorite species of fish.