Energy efficient Marineland Advanced LED Strip Lights give your aquarium the light it needs to shine; while using less power than two conventional fluorescent tubes! Redesigned to be 20% brighter; each Advanced LED strip comes with the necessary long-lasting LED lights that help bring out the vibrant colors of your tank inhabitants. Added Moonlight LEDs allow you to enhance your aquarium's natural environment with a shimmering night time glow! Includes integrated timer functionality; allowing you to automatically control daytime and moonlight settings Mounting legs adjust to fit aquariums 36 in. to 48 in. wide. Visit our Pet Blogs for fun articles and information about all of your favorite pets!