The LEDDY TUBE 10W MARINE D&N LED module is designed for lighting seawater coral reef tanks. Contains carefully selected LED diodes that emit strong white light with a colour temperature of 10000K, ideal for the development of flower animals. Ensures ideal lighting of the aquarium and guarantees excellent living conditions for its inhabitants. Can be installed in Aquael lamps and covers. Thanks to the application of the accessory adapters T5/T8, it is also possible to mount in any cover or lamp designed for traditional aquarium fluorescent tubes. The DUBLED accessory hanger allows you to add an additional module to the lamp or cover and increase tank lighting in this way. The LEDDY TUBE 10W MARINE D&N LED module is equipped with the Day & Night function. Works in three operating modes: DAY/DAYBREAK/NIGHT. Day is the most basic and powerful light for lighting the aquarium throughout the day. DAYBREAK provides reduced daytime lighting output to 50% plus blue light. It proves itself as the first mode after the night as well as during feeding the fish – especially in the case of a shy occupation. Night is a blue light that allows the unique observation of the aquarium after dusk, including nocturnal fish and animals. The Day & Night lighting beautifully exposes the arrangement in the aquarium, both during the day and at night, and also ensures that the room in which the tank is located becomes more comfortable. Changing the operating mode DAY/DAYBREAK/NIGHT takes place after switching off and on the module with the switch within a time span of less than 5 seconds. Direct switching to DAY mode takes place after turning off the module for a period of more than 5 seconds and turning it on again.