The Exon Terra Natural Light is a full spectrum daylight bulb with a very high visual light output and high color rendering index (98 CRI). With its high visual light output and 6700 K Color temperature the Natural Light Terrarium Bulb is recommended as light source for all terrarium types. \the high light output makes this bulb suitable for planted terrariums and it is ideal for animals with lower UV requirements such as snakes amphibians (frogs toads and salamanders) and nocturnal animals. \combine this full spectrum daylight bulb with Exon Terra s Reptile UVB100 Reptile UVB150 or Reptile UVB200 depending on the reptile s UV requirements to intensify natural sunlight conditions.