This mini compact fluorescent bulb uses a coiled G9-socket design that draws only 6 watts, making it an energy-efficient option for supplemental terrarium lighting. It is built to slot into horizontal Zilla mini halogen and heat-and-UVB fixtures, and its slim profile lets it sit inside low-clearance hoods and screen tops. The bulb outputs both UVB and UVA wavelengths along with visible light meant to support natural reptile activity and coloration. No assembly is required beyond screwing the bulb into a compatible G9 fixture. Because UVB output weakens over time even after the bulb still lights up, periodic replacement on a fixed schedule is recommended rather than waiting for visible dimming. The bulb is sold as a lighting component only; a separate compatible fixture is needed to operate it.