Vertical wall illuminated from both sides..

Discussion in 'Vertical Growing' started by nxsov180db, Dec 9, 2017.

  1.  
    nxsov180db

    nxsov180db Well-Known Member

    So I've got a space I was going to put a 9.5x4.75 tent and now I've got this crazy idea to put a vertical wall in its place instead. The actual space is about 13x7x7 so I could put in a 11-12' long by 7 foot tall wall coming close to doubling my canopy, then I was thinking I'll illuminate the wall from both sides and maybe grow wider bigger plants than if I was only illuminating from 1 side. Has anyone ever illuminated a vertical wall from both sides? I am thinking if I do that I would want wider plants than if I was only illuminating from 1 side. I grow in PVC so I would probably use 3 different levels of 6" pipe and 1.5'-2' plant spacing. Some kind of trellis netting or fencing for support on each side. I grow with cob led now in 3 tents at a hair under 50 watts per sq/ft so I don't see why I wouldn't use the same amount of power and cobs per sq/ft. Will I have to start off with horizontal lighting to get the desired height I need? I would need a finished height of around 2' which really isn't much.
     
    im4satori likes this.
  2.  
    nxsov180db

    nxsov180db Well-Known Member

    @ttystikk Thoughts on this? I know you do vertical walls but with larger trees... Would I be better off growing 2 vertical walls against the actual walls of the room and only lighting from one side?
     
    im4satori likes this.
  3.  
    nxsov180db

    nxsov180db Well-Known Member

    ...If I do decide to grow 2 vertical walls against the existing walls of the room I could mount T8 led strips to the wall itself and when the canopy fills in and the growth closest to the wall is lacking light I could flip them on. I've been using hacked T8 strips in my tents for lower growth and it has been helping quite a bit, I no longer need to lollipop I just let everything grow.
     
    im4satori likes this.
  4.  
    ttystikk

    ttystikk Well-Known Member

    I honestly don't know. Try it!
     
    im4satori and nxsov180db like this.
  5.  
    nxsov180db

    nxsov180db Well-Known Member

    I think what I am going to do is have 2 separate walls illuminated from just one side, something tells me that will yield more than just 1 wall illuminated from both sides. What I will do however is mount T8 led strips on the walls themselves, I can get 100 pack off ebay for $400 and I'll be able to space them every 5 inches it should be enough to fill in behind the canopy as it becomes dense mid way into flowering but I'll probably switch them on from the beginning. I am going to test the integrated power supplies of the T8 leds to see how efficient they are, if they're below 85% I might just power them with some meanwells. I have 288 citizen 1206's I'll use for one wall and I'm thinking about going with QBs for the other side, I'm thinking 45 should do it.. 10x meanwell 320's for each wall will give me around 40 watts per sq/ft. The growing space will actually be 6'x14' even though I have 7' ceilings because my PVC has to be higher than the reservoir. The first row of plants will actually be 24" or so off the ground but I plan on training them to partially grow down. I grow in tents currently and I use closer to 50 watts sq/ft and consistently yield over 1.5gr/w so being I'll be at a lower intensity (40w/ft2) and with a higher number of cobs per ft2 (much better efficiency) and QBs (even better efficiency) I should have no problem yielding the same 1.5+gr/w which puts me at 27 units but it will very likely be more. Doing this 4x a year will be a game changer for sure..
     
    im4satori likes this.
  6.  
    ttystikk

    ttystikk Well-Known Member

    4x per year? Veg someplace else and you'll get 6 turns or more.

    Put up white reflective plastic on the walls before placing your plants against it.
     
    im4satori likes this.
  7.  
    nxsov180db

    nxsov180db Well-Known Member

    I'm not sure I have enough space to veg separately. I have white plastic up now but I think I am going to put up osb board and paint it flat white, I need something rigid to mount the T8 led strips to.
     
    im4satori likes this.
  8.  
    ttystikk

    ttystikk Well-Known Member

    Plastic is waterproof, cheap and easy to replace.
     
    im4satori likes this.
  9.  
    nxsov180db

    nxsov180db Well-Known Member

    I could always put the white plastic over the osb board. I need the osb board so I can mount all of the led strips, I'll need to be able to screw them in at random.
     
    im4satori likes this.
  10.  
    ttystikk

    ttystikk Well-Known Member

    No, the plastic goes behind the plants on the wall.
     
    im4satori likes this.
  11.  
    nxsov180db

    nxsov180db Well-Known Member

    I know, but the wall will be osb, so when I put white plastic over the osb the plastic will be the first thing behind the plants.
     
    im4satori likes this.
  12.  
    OldMedUser

    OldMedUser Well-Known Member

    Usually its two walls or a circle of plants growing vertically with the light in the middle but why not?
     
  13.  
    nxsov180db

    nxsov180db Well-Known Member

    I'm going with 54 boards powered by 9 meanwell 320's and no heat sinks for one wall.
     
    im4satori likes this.
  14.  
    ttystikk

    ttystikk Well-Known Member

    How big is the target? How many total watts?
     
    im4satori likes this.
  15.  
    nxsov180db

    nxsov180db Well-Known Member

    each wall is 14' long and 7' tall. My first row of PVC will be 20-24" off the ground so the first row of plants I am going to have to train to grow down somewhat, my goal is 6' tall of plants so should be 6x14. The meanwell 320's I have now put out 340-350 watts and I'll be using 9 of them so 3060-3150 per 6x14 wall or 36-38 watts sq/ft. Those are output watts from the driver btw, not at the wall watts.
     
    im4satori and ttystikk like this.
  16.  
    ttystikk

    ttystikk Well-Known Member

    Counting wall watts, my modules pull 225W each. I used 4 of them for each 24ft² trellis panel, 6' tall x 4' wide. That's 37.5W/ft² My trellis panels started 15" above the floor.

    You might do better closer to 30W/ft².
     
    im4satori and Appalachianhills like this.
  17.  
    nxsov180db

    nxsov180db Well-Known Member

    Was 37.5 watts to intense? Do you use Co2?
     
    im4satori likes this.
  18.  
    nxsov180db

    nxsov180db Well-Known Member

    I use citizen cobs right now at about 43-44 watts per sq/ft/1 cob per sq/ft. It seems to be about the max lighting the plants can take or at least close to it. I run 1000-1250 ppm of co2 I'm thinking about increasing it to 1500ppm. I set it at 1200 but the controller lets it drop to 1000 before it kicks on. So if I want 1500 I guess I'll set it to 1700..
     
    im4satori likes this.
  19.  
    ttystikk

    ttystikk Well-Known Member

    Borderline too strong and yes I did.
     
    im4satori likes this.
  20.  
    ttystikk

    ttystikk Well-Known Member

    I doubt you'll see much difference with such an increase in CO2.
     
    im4satori likes this.

Share This Page