High Intensity Tri-color LED Lighting System Perfect for Fresh-water, Reef, & Coral Aquariums High intensity, high lumen 3w led lamps create a shimmering light that simulates natural sunlight Custom-tuned polycarbonate optics focus the intense light down into the aquarium. The optics are optimized for maximum coverage and penetration. Adjustable gooseneck, ideal for frag-tanks, all-in-one systems & large desktops Sleek brushed aluminum housing resists corrosion & helps dissipate heat generated by the led lamps Universal mounting assembly is compatible with rimless & most framed aquariums.Tri-color configuration offers color spectrums vital for aquatic systems which demand high-output lighting Low voltage UL Listed power transformer for maximum safety & power efficiency. 3-position power control allows users to easily cycle between three lighting profiles: full daylight, lunar, & off mode