The Kessil A160WE Tuna Sun Controllable LED Aquarium Light gives you an unrivaled shimmer gives the look of natural sunlight in your aquatic garden. Kessil is the only company to manufacture all LED arrays in-house with custom spectral blends specifically tailored to meet aquarist needs. Our LEDs now emit a "Double Peak" spectrum, which improves plant color and growth by enhancing photosynthetic absorption. Patented Dense Matrix LED technology concentrates multiple LED chips into an array, creating a powerful light source with better and deeper penetration, without sacrificing coverage. Different wavelengths within a single LED array are seamlessly blended before leaving the light, emitting a uniform color with widespread coverage. High performance and low maintenance. Simple and compact units feature quiet operation, innovative heat management and efficient, long-lasting LED construction. Tune the spectrum and intensity for a personalized look. Kessil Logic maintains consistent output across the spectrum. 6,000-9,000K. Compatible with 0~10V external controllers. Daisy-chain multiple lights for seamless control from a single source.