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The Goatse Man
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Registered: 04/21/08
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Veg/FL Spectrum Question
    #57552 - 06/14/08 09:35 PM (13 years, 5 months ago)




Sirius said:
A better way to help decide how many bulbs is to consider how many lumens they are putting out. 4000 to 6000 lumens should keep a few to a dozen plants well for the first couple weeks while vegetating, but you're going to want at least 2000 for just a couple of plants while vegetating. You're going to want at least 2000 lumens per square foot while flowering. Once again, more is better.

Hope that helps. I'll add that this is what I've gathered from doing some research around the net and I haven't actually grown with CFL's, so hopefully someone who has can come along and be of more service. :wink:


Hanky said:

Sirius said:
Daylight bulbs for vegetative state and cool white for flowering. 

Cool white have more blue spectrum and suit veg better, warm white with higher red spectrum suit flowering better.

  • Cool White = Veg
  • Warm White = Flowering

Ok with all that said what is going to be effected if I was to use the same bulb throughout the whole growth cycle what is going to be the loss in yield and growth rate going to be like? Also, can I possibly offset the less than ideal spectrum with tossing more lumens in per sq ft?

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