@Visions, I’m using 60w led board with Samsung 301b white leds and red Osram Oslon leds. Based on the experience of micro grow reports I’ve seen, I would say 60w-75w is enough. You can build your own light using cob leds for example and it can be even more powerful if you will use a dimmer. My box heigh is about 22 inch, so I suppose 60w is enough
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