Size: 36" Wattage: 25W The T8 Ocean Sunreg; 10,000K high intensity lamp which creates a beautiful "deep ocean" effect in your marine or freshwater aquarium. This emission spectrum, strong in the blue regions, supports the photo biological processes of marine algae and freshwater plants. Ocean Sun promotes the growth of zooxanthellae algae, essential for the growth and well being of all photosynthetic corals and invertebrates. Ideal for all marine aquariums, and freshwater aquariums where a deep water effect is desired. Zoo Med's line of fluorescent aquarium lamps are made in Europe for ultra high quality, color, and longer burn life. Our energy saving T8 sizes can save you up to 30.00 per year in electricity over the thicker T12 size lamps Effective up to 10,000 hours. T8 Lighting Commercial Spot Zoo Med's T8 Lighting makes your fish look their best while providing UVA for photosynthetic processes in plants and marine algae. Check out this commercial spot for Zoo Med's T8 Lighting that premiered at ACA's 2011 convention.