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Old 01-18-2007, 09:16 AM
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I would assume so, but I don't know for sure, i've always used ventilated lighting. As long as the ambient room temperature stays pretty cool to compensate for the bulb heat im sure you will be okay. Those 400w bulbs can really put off a lot of heat though, especially MH bulbs. Make sure to keep your plants a fair distance from getting burnt.
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