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BVnursery is using LEDS to grow plants…. “he target of the project is to develop an inexpensive, effective method of providing light to plants using only leds. This unit is designed to light standard horticultural starter trays measuing 10 x 20”. The logic follows several paths. Almost zero heat, almost zero waste due to proper spectrum choices, light weight and therefore very versitile. Unit cost has been a monumental hurdle and has been pretty well solved. “ [via] – Link.