Zilla Incandescent Night Red Heat Bulb for ReptilesThe Zilla Night Red Incandescent Heat bulb is ideal for tropical and desert habitats, the Night Red Incandescent Heat Bulb provides ambient heat in which most of the photons emitted by the filament never escape the dark tint. Provides 24 hour ambient heat source for a healthy reptile habitat Red light provides nocturnal viewing without disturbing the reptiles day night cycles Great for tropical and desert reptiles The Night Red Incandescent Heat Bulb