Starting seeds using HID's

Discussion in 'General Marijuana Growing' started by purplecream, May 25, 2010.

  1.  
    purplecream

    purplecream Active Member

    Can you put a germinated seed straight under a MH light? I have a 250 watt HPS/MH, I put it under the 250 watt MH and i cooked my seed:cry:. I guess i'm just gonna use my leds for the first few days. But anyways can this be done? If so how far does it have to be from the seedling?
  2.  
    phyzix

    phyzix Well-Known Member

    As long as they stay below 85F degrees a 250 watter will have no adverse effects. It puts out less power than the sun per square foot methinks.
  3.  
    laceygirl

    laceygirl Well-Known Member

    What he said...:-)
  4.  
    purplecream

    purplecream Active Member

    Weird..Because my temps were at 83F and my humidity was at 65% and my seed was cooked. Also i had the light a foot and a half away.
  5.  
    jumboSWISHER

    jumboSWISHER Well-Known Member

    did you mist the seedling? water drops cudda magnified it ya kno
  6.  
    PeaceLuvPot

    PeaceLuvPot Member

    My germinated seeds went right under my 400W HPS, no issues whatsoever. Well, there was one. I was a little worried about them being too close, so they actually stretched until I moved them closer, They are 2 weeks and one day old and doing awesome.
  7.  
    phyzix

    phyzix Well-Known Member

    2 week olds under 400 HPS, 12 inches away at 65 degrees.

    [​IMG]
  8.  
    laceygirl

    laceygirl Well-Known Member

    Hi there,
    These are my seedlings under a 400watt metal halide... I start them under a 100watt propagation flouro (4 days)then transplant them like this...

    [​IMG]

    As you can see the light is a fair distance away...Bout 22 inches... I do it via my thermometer...I move the lights up till I reach my desired temp and leave it there... I could get it closer with another fan, but I'm in the middle of winter here and I have an exhaust fan which also provides me passive intake, I do need to get a fan in there blowing on them for strengthening their stems though...:-|
    Try again, there may have been something else at play there...LG..
  9.  
    YOUNG BUCK

    YOUNG BUCK New Member


    I do the same with a 400w hps as soon as the seeds pop they get the full 400w hps no problems.
  10.  
    YOUNG BUCK

    YOUNG BUCK New Member

    Exellent progress.
  11.  
    purplecream

    purplecream Active Member

    alright thanks guys i have some more seeds right here im gonna try again.
  12.  
    YOUNG BUCK

    YOUNG BUCK New Member

    Get the temps right and you can put a 400w hps 8-10" above the canopy or top leaves and they will grow super fast.

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