ini Halogen Lamp Blue 50 Watt for Zilla Mini Dome Halogen Fixture. The Mini Dome Fixture takes up less space on terrarium tops and accurately pin-points light and heat. 50 Watt Mini Halogen Bulb is equavalent to 100 to 150 watt incandescent bulbs | Up to 250% more efficient than incandescent | Thicker glass and stronger filament bulbs yield over 1,000 hours on average, double versus incandescent | Provides healthy light and essential warmth for your reptile | Fits with Zilla fixtures: Halogen Mini Dome, Heat & UVB Basking, Mini Heat & UVB and more!