Since 2008, the lumen output per watt of LEDs has doubled, and the best LEDs are now on par with HID lights in terms of lumens/watt with one exception, they are far more efficient. The most important wave lengths for plant growth and flowering are found at the 420nm, 450nm, 630nm, and 660nm wavelengths. Red is more important for flowering and yields, and blue more important for node intervals and faster growth and absorption. BlackStar delivers these wavelengths, scientifically balanced for maximum efficiency. Black Star LEDs use an optimized blend of 60 degree, 90 degree, and 120 degree LED chips. In this configuration, light coverage for the grow area is maximized and light penetration is increased when compared to lights using a single spread angle LED light. The BlackStar line was engineered from the ground up based on feedback from our customers on the most needed light output values for your growing footprint. Using custom encapsulated chipsets, we are proud to offer 2w and 3w LEDs in the BlackStar product line.