Pretty much went off the papers that came with it... 18-24" is the sweet spot for those lights.Yes this is my only light. It's a 2000 kingplus so I figured the one should cut it in my 3X3 tent. Not a massive operation by any means. I sure hope that this light does well in my setting. So since you literally have experience with this brand of lights how did you measure your distance from plant to light during the different stages of growth.
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