The Exo Terra Night-Glo A19 Moonlight Terrarium Lamp has a dark blue glass sleeve allowing it to emit a moon-like light that provides for nocturnal viewing. The heat generated by the bulb is minimal but enough to provide tropical night time temperatures. The lamp does not interfere with the natural night cycles of the reptiles and it helps to stimulate breeding behavior in reptiles and amphibians. All bulbs are manufactured in colored glass thereby preventing the fading or cracking as seen in coated bulbs. The Exo Terra Night-Glo A19 Moonlight Terrarium Lamp does not produce UVB rays. It can be combined with Repti Glo or Sun Glo bulbs for a 24-hour cycle. The Exo Terra Night-Glo A19 Moonlight Terrarium Lamp Features and Benefits: - A19 lamp - Moonlight lamp - Simulates natural moonlight - Perfect for nocturnal viewing - Provides tropical night time temperatures - Stimulates breeding behavior in reptiles and amphibians - Can be combined with Repti Glo or Sun Glo for a 24 hour cycle.- SKU: RCHG1087