600 watt HPS Question

Discussion in 'Indoor Growing' started by roseypanties, Sep 11, 2008.

  1.  
    roseypanties

    roseypanties Well-Known Member

    Got a 11 month old 600 watt HPS bulb and it is making the babies Pretty Hot...
    Is this TOO long to have a bulb? should I change?
    Thank you for all your info.
    Its a Horilux 600whps got in November..

    Attached Files:

  2.  
    roseypanties

    roseypanties Well-Known Member

    Anyone? Old HPS = Mucho Heat?
  3.  
    Zhu

    Zhu Well-Known Member

    all hps are really hot. Basically they are just really excited sodium particles creating friction. You just need more air moving and good choice on the 600w best w to lumen ratio
  4.  
    roseypanties

    roseypanties Well-Known Member

    It seems a LOT hotter than when I first got it. Maybe I should just get another one. I have an intake and ehaust fan. Weird.
  5.  
    s40ward

    s40ward Active Member

    Did you buy it in the winter? lol
  6.  
    roseypanties

    roseypanties Well-Known Member

    True, i did buy it in the winter....lol.. but I have adequet airflow (I thought) and still running hot. I have it around 3 FEET above the babies because of HEAT...HELP
  7.  
    desertrat

    desertrat Well-Known Member

    mm..how are you determining its too hot?? if you're using a thermometer it should be in the shade,not directly in the path of the light. if you're using your hand to test the radiant heat, as you should, you should be able to move down the light to at least 18" without your hand being too hot.
  8.  
    roseypanties

    roseypanties Well-Known Member

    Really, I have the thermometor that has an In and Out Temp. the Out is on a string and I have it at the top of the babies. Makes sence about the thermometor being Right under the lamp. huh.
  9.  
    desertrat

    desertrat Well-Known Member

    the temps that are given as guidelines for weed are for the air temperature at the top of the plant canopy. if you have your thermometer;s probe in direct light it is picking up the radiant heat of the light and will give you a much higher temp than the air temp. you should not have to keep a 600 watt light three feet from the plants to get the right temperature.

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