Can I Vegetate with HPS?

Discussion in 'Newbie Central' started by hwy420, Oct 6, 2009.

  1.  
    hwy420

    hwy420 Well-Known Member

    Hey Everyone; I apologize for my newbiness, but I had a couple of questions.

    I know that for vegetating, a Metal Halide on 16/8 light schedule is optimal.

    I know that for flowering, a High Pressure Sodium bulb on 12/12 light schedule is optimal.

    My questions are:
    1.) Can I vegetate with a High Pressure Sodium bulb on a 16/8 light schedule?
    2.) Can I flower with a Metal Halide bulb on a 12/12 light schedule?

    I need to know whether or not I have to buy a 600W Metal Halide bulb to vegetate my clones for a week before putting them into 12/12 flowering. Thanks in advance!
  2.  
    Bob Smith

    Bob Smith Well-Known Member

    1) Yes
    2) Yes

    Some people say that HPS for veg makes plants stretch; I don't agree, and use a 400HPS for vegging because I like the additional lumens it throws off (no stretching problems at all).

    Also, not sure where you got the 16/8 schedule - many growers use 18/6 (I go 24/0), but 16/8 is not nearly as common.

    Good luck.
    hwy420 likes this.
  3.  
    SCI

    SCI Active Member

    you can veg or flower with either hps and mh
    hwy420 likes this.
  4. Thats all I use and if you want you can use a MH in a HPS ballast but I wouldnt go any lower than 18/6
  5.  
    c5rftw

    c5rftw Well-Known Member

    of course you can... use more blue light in veg than red light but uses twice the red light during flowering than vegging
    hwy420 likes this.
  6.  
    c5rftw

    c5rftw Well-Known Member

    yah its 18/6 not 16/8
  7.  
    hwy420

    hwy420 Well-Known Member


    Awesome guys; thanks so much for the clarification! So now I know that different stages are dependent on light schedule and not the light spectrum.

    YAY!!! Sorry; I made a typo with the 16/8 lol. +REP To all of you!!!!
  8.  
    JimmyPot

    JimmyPot Well-Known Member

    It was not that long ago when MH was the best lights hps has came a long way.
    hwy420 likes this.
  9.  
    c5rftw

    c5rftw Well-Known Member

    for real. really the best right now... all around that is...btw, i cant stop starring at your avatar

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