@CRiSPrGrow, the heart of this microbox is the lamp - I chose the most efficient and cheap household led-lamps - Lexman 7.5-GU5.3 27R / 2700K /750lm - 12 units . So total (real) power of 12 units - 12x7.4 = 88W and 12x740=8880 lumens! which is equivalent of 100W HPS lamp.
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