MedicalOnly
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Because you now looking at it like a mathematician. 1000ppfd at the corners and how much in the middle? Then how high do you hang it? Remember the high the more light wasted to light bleed missing the plants. It's no better than the 600w ones that can be kept closer. All that extra wattage is going towards wasted light not being used by the plants because you need to hang it high so you don't cook em. Try a gavita 1700e and see if you can put it 6" away because that essentially what you would be doing. Mathematically you are correct but practically its a waste.
Photontek hung at 26.5" the gavita at 24" both in a 5x5 area. Wall watts is 753 vs 652. At only 100 more watts you get 1000ppfd with minumal drop. The gavita is maxed out at 700 with 122 ppfd at the corners. You think thats waist and you would pic the Gavita?? Gavita top picture Photontek bottom
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