AQUAEL Leddy Tube Day & NightPlease allow 2 to 7 working days to deliver. The LEDDY TUBE SUNNY D&N LED module is equipped with Day & Night function. It works in three operating modes: DAY DAYBREAK NIGHT. DAY is the basic and most powerful light to illuminate the aquarium during the day. DAYBREAK is a reduced daylight power of up to 50% plus blue light. It works well as the first mode after the night and when feeding fish especially if you have a skittish stock. NIGHT is a blue