LED VS HPS heat test - 600W HPS vs 400W LED

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We setup two comparable Lighting systems; the 600W HPS (640W, 805 umols PPFD) and the MIGRO 400 (430W, 840umols PPFD) in a 120cm x 120cm tent (4x4). We place a thermometer inside and outside the tent and record the temp rises with the tent sealed. We also show you the thermalimage comparisons between the two tests.
The results show 50% higher temp rise for the HPS over the LED. You can also see the heating effect of the light from the HPS on the tent walls.

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