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Originally Posted by Racefan
they are 4 feet away from the light? Your only using about 1/16 of the available lumens if that. I place my 1000watt HPS about 12 inches away from my plants. You need to get it closer. If temps are a prob then you need to increase ventilation but to properly utilize your light you need to get it closer. I would put a light 3 or 4 feet away for brand new seedlings or clones but not established plants
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Here's a few pics I took today - how much closer can they get? - I'm just paranoid of burning them.
The air purifiers not only make a huge difference with air quality, but really gives a great breeze when on HI:
