LED efficientcy

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I'm a grade 9 student working on s a space design contest. For my project i'm using leds to grow indoor plants. i read that the most efficient leds for growing plant is 660, 615 and 461 nm. does any body know the luminous efficacy of efficient leds of these types. any suggestions would be helpful thanks
 

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Drakkith
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You may have to find the specific LED's you want to use first. The efficiency of LED's could be vastly different depending on the shape, size, materials, ETC.
 

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