true HPS grow lamp, not high lumen output sodium lamp. with right lumen, right PAR, right spectrum ... test report? No, the spectrum looks same as grow light's, we cannot learned anything from such general ... : right spectrum, high lumen. that's a real grow light, but high price.Our bulbs: better spectrum than ... by grower to their greenhouse.We started producing LED grow on 2006, designer was my father, he ...