Marineland Advanced LED Strip Lights provide 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 aquarium widths of 18-24 inches, 24-36 inches, 36-48 inches, and 48-60 inches, and an integrated timer provides maximum control. Daylight LED lamps provides brighter output than two typical fluorescent bulbs and lunar LED lamps replicate the moon-light cycle.