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All COB Users - Lettuce Grow Challenge!!

Discussion in 'LED and other Lighting' started by OneHitDone, Apr 10, 2016.

  1.  
    OneHitDone

    OneHitDone Well-Known Member

    This seems to be a west coast issue? I believe they blend soils in multiple locations
     
    Evil-Mobo likes this.
  2.  
    OneHitDone

    OneHitDone Well-Known Member

    You could always rig up a small bubbler or something for fun too :hump:
     
    Evil-Mobo likes this.
  3.  
    Evil-Mobo

    Evil-Mobo Well-Known Member

    Yeah once the mmj plants are all kicking strong I want to rig up something hydro for the veggies and fruits we just got some basil today and a lime tree for the tent so ............

    And my brother just got a bunch of seeds from burpee says he has to give me
     
  4.  
    pinner420

    pinner420 Well-Known Member

    Gutted the greenhouse this morning. Preparing it for basil kale lettuce and timatoes. Fixed the roll up side. Gonna throw another layer on it. Should be up and running by end of the week see if i can freeze any plants to death...
     
  5.  
    frica

    frica Well-Known Member

    Update time, screwed in another 20W Osram parathom a few days ago.

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    MediheaLed likes this.
  6.  
    pinner420

    pinner420 Well-Known Member

  7.  
    OneHitDone

    OneHitDone Well-Known Member

  8.  
    pinner420

    pinner420 Well-Known Member

    Your out of pocket is 7k. Feds pay the rest and you get 20kw.
     
  9.  
    pinner420

    pinner420 Well-Known Member

    Tiered autopots going in tomorrow. Douched with h2o2. Preparing for double pithium napalm after full assembly.
     

    Attached Files:

    OneHitDone likes this.
  10.  
    Yodaweed

    Yodaweed Well-Known Member

    i think the sun is too strong on my lettuce, it's fading a bit and got some weird red spots on it (kinda looks like its turning purple) not really sure what's up with it.
     
    OneHitDone likes this.
  11.  
    pinner420

    pinner420 Well-Known Member

    Installed propane heater today. I have a comparison for you.. 100 watts t5 on the left 9 watts on the right. The one on the right has 1/3rd more plant mass..
     

    Attached Files:

    OneHitDone likes this.
  12.  
    muleface

    muleface Well-Known Member

    LOL! I have been watching this growth process and thought "what the hell is he talking about?" I thought you said you were growing Romaine, but its Roma tomatoes. Now everything makes sense. I was thinking wow, that is one leggy lettuce plant.

    So what is the plan when it gets bigger? Are you going to see if you can get tomatoes under a 9 watt led? Or will you put it under something else, or is that what the greenhouse is for?
     
  13.  
    Diysystem

    Diysystem Member

    Well seems that i have to do everything myself as no one here are intrested in spectrum respond in lettuce anymore.

    I have orderd XP-G3 cold white, neutral white and warm white. LM561C 3000k, 3500k, 4000k and 5000k strips. XT-E royal blue and XP-E photo red.

    Will do the following test in the next 6 weeks to se how lettuce respond to different light recipes.

    XP-G3 cold white only
    XP-G3 neutral white only
    XP-G3 warm white only
    XP-G3 cold white + 660nm photo red 75/25
    XP-G3 neutral white + 660nm photo red 75/25
    XP-G3 warm white + 660nm photo red 75/25
    LM561C 3000k only
    LM561C 3500k only
    LM561C 4000k only
    LM561C 5000k only
    LM561C 3000k + 660nm photo red 75/25
    LM561C 3500k + 660nm photo red 75/25
    LM561C 4000k + 660nm photo red 75/25
    LM561C 5000k + 660nm photo red 75/25
    XP-E photo red + XT-E royal blue 60/40
    XP-E photo red + XT-E royal blue 75/25
    XP-E photo red + XT-E royal blue 80/20
    XP-E photo red + XT-E royal blue 90/10

    Test period 30 days from seedling. Biomass, texture, structure and dry weight will be recorded

    Hope this thead will go back to its roots soon
     
  14.  
    RandomHero8913

    RandomHero8913 Well-Known Member

    DIY I'm planning on doing the same using all the Gen 6 90cri CLU048-1212's. I'll be testing out the 27, 30, 35, 40, and 57k each in a 1sqft space.
     
    OneHitDone and Diysystem like this.
  15.  
    Diysystem

    Diysystem Member

    Great to hear randomhero! Tried clu048 gen 5 3500k and 5000k already but had problem with uniformity so going with diods instead.
    Umol/s?
     
    OneHitDone likes this.
  16.  
    RandomHero8913

    RandomHero8913 Well-Known Member

    DIY,

    I'll be running a single light in each box and all being controlled by one driver. I'm planning on starting down near 350ma and working up to 700ma. Here is the data from the Citi Calc:

    1212 2700K90Min 1 COBS @700 mA ON 1.813 PROFILE HEATSINK
    1 SQ.FT. CANOPY 94% EFFICIENT DRIVER @1 CENTS PER KWH
    Total power watts at the wall: 24.74
    Cobs power watts: 23.25
    Total voltage forward: 33.22
    Total lumens: 2847.38
    Total PAR watts assuming 10% loss: 7.79
    Total PPF: 42.58
    PPFD based on canopy area: 458.34
    PAR watts per sq.ft.: 7.79
    umol/s/W: 1.83 LER: 329.00 QER: 4.92


    1212 2700K90Min 1 COBS @350 mA ON 1.813 PROFILE HEATSINK
    1 SQ.FT. CANOPY 94% EFFICIENT DRIVER @1 CENTS PER KWH
    Total power watts at the wall: 11.92
    Cobs power watts: 11.21
    Total voltage forward: 32.02
    Total lumens: 1468.60
    Total PAR watts assuming 10% loss: 4.02
    Total PPF: 21.96
    PPFD based on canopy area: 236.40
    PAR watts per sq.ft.: 4.02
    umol/s/W: 1.96 LER: 329.00 QER: 4.92
     
    OneHitDone likes this.
  17.  
    Dreddd

    Dreddd Member

    Not sure about his 9W led.... but i got these babies under 2x14.5W led bulbs, yes those are beefsteak tomatoes.
    20170319_112055.jpg
     
  18.  
    OneHitDone

    OneHitDone Well-Known Member

    This is great and exactly what we need. I am very happy to see that those with the resources to do so are grabbing up a bunch of different led's and trying this and hopefully sharing the outcome.
    That was the whole point in this thread, to work together to find the solution that truly produces not just biomass but proper structure, texture, color, etc.
    I know most of the people on this site think its lame or a waste of time and effort growing lettuce, but this right here will be key in unlocking the next level of cannabis turpine production under led
     
  19.  
    pinner420

    pinner420 Well-Known Member

    Gonna clone it heavily then try some flowering...
     
  20.  
    Diysystem

    Diysystem Member

    You're on point. Remember not to exceed 20 mmol/d or you will get tipburn.

    Would anyone here be intrested to start a skype group for vegetable testing, studies and buisness talk? My research is for commerical indoor farming and would love to talk to same minded people :)
    Designing my own light and then manufacture it in large scale on mcpcb is the next step after getting the results. If someone could help i'll appreciate it :)
     

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