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Originally Posted by mike31154
Did a bit of a net search on the subject & there's plenty of techno talk about how MH lighting works etc., but not much on the cooling aspect or if it's required/beneficial. Maybe there's more info to be found with our horticultural friends, although they use even higher wattage lamps, generally 400 plus. I did come across a site that showed pendant/reflector housings which accomodated fair sized cooling ducts through the sides. Cooling for that application may be necessary to keep from cooking the plants, not necessarily for lamp efficiency or life. I'll search a bit more when I have additional time on my hands. I guess it might help if I had some friends with grow ops in their residence!
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lol!! Won't be long till grow ops go to led for longer life, less heat, and less power consumption just like the "reefers"!!lol