This is a great product to provide the night and day cycle most reptiles need. 
 
Zoo Med's Nano Dome Lamp Fixture is a very small lamp fixture for Nano-size terrariums that are ideal for small geckos, hatchling reptiles, amphibians, tarantulas, insects and other invertebrates. For use only with Zoo Med's Nano heating and lighting products (lamps not included). Holds up to 40 watts.