Results 1 to 4 of 4

Thread: Is it bad if the seedling stage exceeds 10K lux?

  1. #1

    Join Date
    Feb 2023
    Posts
    5
    Thanks
    0
    Been Thanked: 21 Times

    Default Is it bad if the seedling stage exceeds 10K lux?

    As the title says really

  2. The Following 6 Users Say Thank You to FL4YVA For This Useful Post:

    barney_b (12-02-23), CityDweller (12-02-23), GEORGE (12-02-23), scoot (12-02-23), ToughCall (16-02-23), V8 (12-02-23)

  3. #2

    Join Date
    Mar 2022
    Posts
    652
    Thanks
    877
    Been Thanked: 3,926 Times

    Default

    Quote Originally Posted by FL4YVA View Post
    As the title says really
    Intensity in isolation is irrelevant.

    10k lux at 15m the plant is going to get barely any light 24/7, 10k at 1cm and your plant will be a black crisp in about an hour.

    A better metric to use is DLI. DLI measures the intensity of the usable photos at the canopy as a factor of time. In seedling you should be looking at about 10-15DLI.

    Raise the light, DLI lowers.
    Increase the time, DLI increases
    Increase the light intensity, DLI increases.

    You get the idea

    MJ
    Previous Diaries - Auto Blue Dream Dankberry
    Grow Kit List

    Lights - 2*MarsHydro TS1000, 1 MarsHydro FC3000 and 1*Migro Array 2 Pro
    Tent - ACInfinity Cloudlab 642, HomeBox 80*80*160
    Extraction - ACInfinity Cloudline S6 plus - Mountain Air Carbon Filter
    Neuts - Emerald Harvest
    Grow Medium - Coco (Canna Coco Pro+) - Plant!t DWC/Wilma

  4. The Following 6 Users Say Thank You to MadJohn For This Useful Post:

    barney_b (12-02-23), CityDweller (12-02-23), GEORGE (12-02-23), scoot (12-02-23), ToughCall (16-02-23), V8 (12-02-23)

  5. #3

    Join Date
    Apr 2018
    Location
    eastern us
    Posts
    9,782
    Thanks
    87,992
    Been Thanked: 50,169 Times

    Default

    I would think that the light type would have a lot to do with this as we are measuring PAR for growth and not lux.
    A good led will have a lower lux than a good HPS when checked at the same PAR level.

  6. The Following 6 Users Say Thank You to CityDweller For This Useful Post:

    barney_b (12-02-23), GEORGE (12-02-23), MadJohn (12-02-23), scoot (12-02-23), ToughCall (16-02-23), V8 (12-02-23)

  7. #4

    Join Date
    Oct 2020
    Location
    1 Rocket Road, Hawthorne, CA
    Posts
    5,638
    Thanks
    38,250
    Been Thanked: 33,477 Times

    Default

    I have seedlings under 8-12k lux from birth. Keep the temps /rh in place and they should be just fine

    V8
    Mini veg tent grow: V8`s mini garden



  8. The Following 6 Users Say Thank You to V8 For This Useful Post:

    barney_b (12-02-23), CityDweller (12-02-23), GEORGE (12-02-23), MadJohn (12-02-23), scoot (12-02-23), ToughCall (16-02-23)

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


THCtalk.com Disclaimer - You must be over 18 years old to view/use this site .THCtalk.com does not encourage growing Cannabis or possessing Cannabis. Learning how to grow Cannabis instructions should be for educational purposes only. All Information contained in this web site is for: Historical reference, Scientific reference and Educational purposes only. Visitors to this website are advised against breaking the law as It is illegal to smoke, grow, or possess cannabis in the UK and some US States