*Question For Lighting Experts*

Discussion in 'Growing Marijuana Indoors' started by mannyl2, Sep 17, 2012.

  1. Hello All,

    I want to create a 4x4 NFT system that will have 12 four inch PVC pips in it. Lettuce will be grown but I am having a hard time figuring out the amount of light needed for very healthy lettuce.


    I'm not interested in overkill. I want the minimum that will provide the plants what they need. Assuming i will place the lights about 1" - 3" above the plants, how many watts do I need to give lettuce?

    1.) I want to do 4' Linear Fluorescent Tubes. They will be 6500k, but I'm not sure which to use, T8 or T5.
    2.) Will eight, 4' bulbs that are 14watts each be enough?
    3.) Can I use 14watts to grow lettuce or are 32 - 54 watts required?
    Thanks so much!
    Manny
     

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