The Exo Terra Day & Night LED is ideal for reptiles, amphibians and invertebrates with NO UVB-requirements, like snakes, nocturnal geckos, frogs, newts, salamanders, spiders, scorpions, insects, etc. The bright white LED s create a nice daylight, while the blue LED s mimic a moonlight shimmer that enable you to observe your animals at night without disturbing their natural behavior. The dim light of the blue LED s allows nocturnal animals to navigate in their territory in search of insects, mating-partners, etc whereas in total darkness they would be completely disoriented. Simply tap the Day/Night logo touch button to switch from bright daylight to blue night light. The Exo Terra Day & Night LED is the most convenient and energy efficient way to illuminate your terrarium day & night. Conventional lightbulbs waste more than 80% of the used energy in the form of heat, whereas the Exo Terra Day & Night LED illuminates your terrarium with a minimum of heat and a maximum of light output. An almost complete absence of heat production reduces the risk of overheating during summer season and allows natural night time temperature drops.