400watt Bulb Advice

Discussion in 'Growing Marijuana Indoors' started by Hosbitalized, Jan 22, 2010.

  1. So my dad tried growing with the same setup before i existed twenty some years ago and he said that it "melted" his plants. Aside from the fact the word melting doesnt make alot of sense it doesnt sound good.

    So my question is, what kind of space am i gonna need to be lookin for and whats a good distance from the plants? this thing is insane bright

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    and the ballast, crappy cell pics
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  2. A 400w isn't all that powerful, he probably just had it too close. If you're using a ballast light (HPS, or MH), then they will get pretty hot and you need to keep your plants at least a foot away.

    Just set a fan up so that it blows directly ontop of your plants. Once the fan and the light have been going for about 30 minutes, place your hand ontop of the plant and see if it's too warm to leave your hand there. If you get hot, your plants will, but if you're fine, they'll love it. :)
     
  3. cool, i was hoping that was the case, got seeds germinating right now:rolleyes:
     

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