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Thread: heat outtputt on a 400watt mh max 89

  1. #1
    Unregistered Guest

    Default heat outtputt on a 400watt mh max 89

    Hello i`m new to the mh world.does the fixture Have to be cooled down and is it cool to the touch

  2. #2
    Join Date
    Jan 2007


    Probably yes to both questions, but this depends on your setup. What are the reasons for your concern?

  3. #3
    Join Date
    Jun 2008
    Las Vegas

    Default Never Touch Any Lightbulb!!!!!!!!!!!!!!!!!!!!!!!!!!!

    PROBABLY YES? He must be kidding. A 400 mh will heat up a ten by ten room almost 10 degrees without being cooled. As for cool to the touch the ARC (yes an arc) inside the bulb BURNS at like 1500 degrees so I hope that helps a little.
    I grow em' all, and know em' all. Later ya'll

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