Illuminated by Energy Efficient 1watt white LED's that provide higher output than typical fluorescent bulb lighting and 60mW blue lunar LED's 48" - 60" have (24) 1w white and (12) 60mW blue LED's 1800 Lumens. Slim stylized lighting profile. Mimics underwater effect of sunlight. Energy efficient system that doesn't require any bulb replacement. Specifically designed Polycarbonate lens to focus and to protect LED light bulbs. Lifetime Hours - 17,000 hours. 3 pole switch to turn on 1w whites and 60mW blues, just the 60mW blues for lunar effect, or off. Adjustable mounting legs offer flexibility in tank sizes.