Marineland's Double Bright LED 24"-36" Light provides the ultimate opportunity to create a realistic underwater home-aquarium environment. This all-new line of LED lights is 20% brighter and is designed for reliable, long-term performance. Adjustable mounting legs allow for flexibility in fitting aquariums of differing widths. A daylight setting is brighter than a single tube fluorescent fixture and the lunar setting provides a realistic moonlight shimmer. Both settings are energy efficient.