Simulates natural moonlight. Perfect for nocturnal viewing of your terrarium. Can be combined with a Fluker daylight bulb (sold separately) for a day and night cycle. Always use with a thermometer (sold separately) to create a cozy and healthy environment for your critter. Can be used with Fluker’s Clamp Lamp Series (sold separately). The Fluker's Black Nightlight Reptile Bulb simulates natural moonlight, so you won’t disturb your critter’s day and night cycle. It’s perfect for viewing and heating nocturnal reptiles and amphibians. Pair it with a Fluker’s daylight bulb (sold separately) to create a natural day and night cycle for nocturnal and diurnal reptiles. This is also great for use with aquatic turtles, terrestrial turtles, tortoises, aquatic amphibians, terrestrial amphibians, invertebrates, lizards, and snakes. Specifications Item Number 863270 Weight 3.20 ounces Dimensions 2.5 x 2.75 x 5.25 inches Sourced From China Made In China Material Glass Reptile Type Gecko, Frog, Insect, Toad, Invertebrates, Bearded Dragon, Aquatic Turtle, Lizard, Snake, Tortoise, Hermit Crab, Painted Turtle, Map Turtle, Red-Eared Slider Turtle, Asian Box Turtle, Greek Tortoise, Russian Tortoise, Hermann's Tortoise, Red-Footed Tortoise, African Dwarf Frog, Pacman Frog, Tree Frogs, Arrow/Dart Frogs, Red Barn Toad, Tomato Frog, Fire-belly Toad, Newt, Salamander, Axolotl, Tarantula, Spider, Scorpion, Millipedes, Roaches, Leopard Gecko, Crested Gecko, Blue-Tongued Skink, Chameleon, Iguana, Water Dragon, Savanna Monitor, Tegu, Anole, Ball Python, Pythons, Boas, Corn Snake, Colubrid, King Snake, Milk Snake