Marineland LED Light Hood provides beautiful illumination for any aquarium. The white LEDs create a shimmering light that mimics the natural underwater effects of sunlight. Enjoy your aquarium in the evening and at night by switching to the soft, blue night light effect mode. This sleek, domed hood is hinged for easy access during maintenance, and the hood cutouts accommodate a wide range of filters. Available in three sizes – this hood measures 30 inches by 12 inches and fits 20L, 29G and 37G tanks.With its slim design, shimmer effects and colors, cool operating temperatures and low cost to operate, LED lighting is fast becoming the favorite for both freshwater and saltwater aquarium owners. Marineland LED lighting systems create endless opportunities for your aquarium.