Save money with Marineland's Double Bright LED Light! Energy efficient LEDs use less than 50% the power of a traditional fluorescent fixture. Powerful 1 watt white LEDs and .06 watt blue lunar LEDs provide shimmering light in two modes of lighting: either daytime (white and blue LEDs), or nighttime Lunar (blue LEDs only), providing similar output to twin fluorescent tubes. LEDs have approximately 17,000 hour operating time, and you won't have to replace bulbs. Individual polycarbonate lens keeps each LED protected and the light focused into the tank. A 3 pole switch gives you convenient control over different lighting modes - all on, blue only on or all off. Sleek external housing. Adjustable mounting legs fit aquariums 48 to 60 in. wide.