Gently fasten the Fluker's incandescent bulb into a Fluker Clamp Lamp or Hood or any UL approved incandescent fixture. Do not plug light fixture into an electrical socket until bulb is fastened firmly to fixture. Place light fixture outside of reptile's enclosure.NEVER place the light fixture inside the enclosure. Reptiles can develop life-threatening thermal burns from contact with an exposed light bulb. Multiple incandescent lights may be required to establish an appropriate ETR. A Fluker's thermometer can be used to monitor temperature within the reptile's environment. Reptile behavior is directly tied to photoperiod (light cycle)., so it is important to provide appropriate intervals of light and darkness. Fluker's recommends a 12-hour day/12 hour night light cycle. A Fluker's red light can be used to observe your reptile at night.The sun produces three primary types of light: ultraviolet, visible, and infrared. Ultraviolet (UV) light helps in regulating behavior and stimulating Vitamin D production in reptiles. Visible light is the spectrum of light that allows humans and animals to see within our environment. Fluker's 5.0 UVB and 10.0 UVB Sun Glow Coil Bulbs generate both UV and visible light and should be used in combination with the Fluker's incandescent light bulbs to mimic natural sunlight.