Mini Halogen Bulb - Night Red - 50 WFor healthy light and essential warmth, few bulbs offer better long term performance than Zilla Mini Halogen Bulbs. High intensity output, energy-efficiency, and compact size make this 50 W Night Red Mini Halogen Bulb a great choice for use when terrarium space is limited. Uses less energy than a comparable incandescent bulbs. Designed for use with the Zilla Light & Heat Halogen Mini Dome. 50 watt Mini Halogen Bulb = 100 to 150 watt Incadescent Bulb.