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Thread: CLONING--- how long to keep lights on?? 24/7? 18/6

  1. #1
    kuri is offline Registered+
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    CLONING--- how long to keep lights on?? 24/7? 18/6

    hi i was wondering when i start cloning, how long to i keep the lights on? 24/7? 18/6? thanks for any advice. take care

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  3. #2
    altwnyguy73 is offline Registered+
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    I have read in hightimes Q&A that plants will not photosynthisize more than 18 hrs a day... I have also heard from local experienced growers that by keeping the lights on 22-24 hrs a day you prevent stretch(distance between nodes or leafsets)...that said... I personnally go 20 on 4 off...for no other good reason than to give time for the lights to coo and give em a break..... about all I got...peace

  4. #3
    shaddr3 is offline Registered+
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    I leave my fluoros on all the time (6 total). MY other mercury vapor light is on a 18/6 schedule.

  5. #4
    del...'s Avatar
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    my schedule for rooting clones, 24/0
    vegging, 20/4
    flowering, 12/12

  6. #5
    magicman's Avatar
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    hi .. i like clones at 18/6 limits streatching which happens as soon as they hit
    regular air and light.....( this can also be stopped using a b 12 solution with a very dilluted BUd solution 1/2 strength )
    always imhop.. keeps....
    Attached Thumbnails Attached Thumbnails CLONING--- how long to keep lights on?? 24/7? 18/6-orangethunderroots.jpg  

  7. #6
    Zcomp's Avatar
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    Every drop of light your clone recieves, it must process it. That means sucking water/nutes through its stump. For more success you should go to 16-18Hrs light.
    More light = less leftover energy for root formation.
    Famous Quote:
    John Sparton:"Do you have the salt?"
    Lenina Huxley:"Salt is not good for you, hence, it is illegal"
    "Demolition Man" 1993
    Disclaimer: I put drug-dealers out of business by growing my own. I do not sell anything! I consume everything. Prosecuting me is supporting terrorism. Do what you think is right, I'll do what I think is.
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