HOW many LUMENS for 2 PLANTS???

Discussion in 'CFL / Fluorescent Lighting' started by freddog23, Dec 25, 2010.

  1.  
    freddog23

    freddog23 Active Member

    i am wondering if i am going to be okay since i started flowering. how many LUMENS are needed to grow 2 plants
  2.  
    Japanfreak

    Japanfreak New Member

    I don't do lumens but a good rule of thumb is 50 watts per square feet or higher to flower.
  3.  
    freddog23

    freddog23 Active Member

    ok i also reado some where that 6500k spectrum is good for veg. i started flower 2 weeks ago, and i read that 2700k bulbs are need for flower? any advice on that
  4.  
    Japanfreak

    Japanfreak New Member

    yeah the blue is better for beg. red for bloom.
  5.  
    Captain Jaz

    Captain Jaz Active Member

    2000-3000+ lumens/square foot. The sun is 10,000/square foot, so ofc you can go higher than 3000 if you can deal with the heat. Less than 1000 won't give you very good results at all.
  6.  
    GodSlave

    GodSlave Active Member

    The generally accepted rule is 10k lumens per sq ft during flower.
    That is exactly right.

    GS:leaf:
  7.  
    freddog23

    freddog23 Active Member

    so is 2700k is the best for flower????? or is there anything better?
  8.  
    GodSlave

    GodSlave Active Member

    Yes. 6500 for veg, 2700 for flower.

    GS:leaf:
  9.  
    darkdestruction420

    darkdestruction420 Well-Known Member

    A mixed spectrum is best.
  10.  
    Japanfreak

    Japanfreak New Member

    A mixed spectrum is the best with the balance leaning towards one or the other for the different stages. If you are going to have multiple lights mix them up
  11.  
    GodSlave

    GodSlave Active Member

    I've always done just one or the other, does it make a whole lot of difference? If it does, then I will be changing...
  12.  
    Japanfreak

    Japanfreak New Member

    Not a whole lot, but a small difference. If I had 4 bulbs I would do 3 of the same and 1 different, with only 2 I would stick to one spectrum
  13.  
    freddog23

    freddog23 Active Member

    lol so what exactly u mean by a mixed spectrum. whats a good combo lol? one 6500 and one 2700
  14.  
    Captain Jaz

    Captain Jaz Active Member

    Yes, 1/3 blue, and 2/3 red will keep the leaves healthier for longer which means bigger buds.
  15.  
    Captain Jaz

    Captain Jaz Active Member

    1 x 6500 2 x 2700 for flowering
  16.  
    GodSlave

    GodSlave Active Member

    He means having both 2700 and 6500 mixed. But this was his advice: "If I had 4 bulbs I would do 3 of the same and 1 different, with only 2 I would stick to one spectrum"
  17.  
    Japanfreak

    Japanfreak New Member

    I wouldn't bother going 1/1 but like Cap says 1/3 or 1/4
  18.  
    Mudslide9791

    Mudslide9791 Active Member

    Hotdog flavored Dorito's.................
  19.  
    Captain Jaz

    Captain Jaz Active Member

    I use a 600 hps, and a 400 dual spectrum MH gives me something like 1/4. But I'm planning to add 4x 125w purple ecolight cfl's, which will give me about 1050w red and 450w blue.
  20.  
    GodSlave

    GodSlave Active Member

    Purple, really? I thought the colored ones were just for fun, not growing?

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