Provide the necessary warmth and light your reptile needs with Zilla Incandescent Bulbs. These bulbs are easy to use for any reptile terrarium and feature heavy-duty filaments that yield more hours of service from every bulb. They provide heating and lighting for reptiles that create the natural daytime in their terrarium. Plus these bulbs are an ideal heat source to help regulate your reptile’s body temperature. Zilla Incandescent Bulbs are available in four colors. Day White is ideal for reptiles requiring bright naturalistic daylight such as bearded dragons iguanas and other diurnal species. Day Blue is most suitable for enhancing color vibrancy and promoting plant growth in habitats with reptiles such as tropical and desert species like chameleons and geckos. Night Red and Night Black are ideal for nocturnal setups where maintaining a low light level is necessary to create natural nighttime conditions. Recommended for use with Zilla Reflector Domes. Celebrate your pet and Rep Yourself with Zilla.