DIY with Quantum Boards

Discussion in 'LED and other Lighting' started by robincnn, Nov 19, 2016.


    dannykay Well-Known Member

    But the price tag of the 120 is so affordable, and when it comes to international shipping the heat sink shipping prices are ridiculous. All and all, the best value for money for a non US based cabinet/tent grower like myself would be in stacking the qb120.
    Humple and pop22 like this.

    DutchGrow Member

    So a 304 will give about 22 lumen per watt more. x600watt = 13200 extra lumen
    Thats like 13% more.
    But the 304 is about 3x times the price of a 120. So what is wisdom...
    10x 304 @60w or 12x 120 @50w

    And there's another question..
    Seems that the curve of 3000k and 3500k are about te same in orange/red area but 3500 has more blues. Wouldn't the 3500 be the better choice because you get the best of both colours?

    DutchGrow Member

    They should run cooler but 10% less heat means also 10% more light so bigger nuts?

    pop22 Well-Known Member

    I've thought about this. I have some tiny autos that I really like. A shelf with QB120's run soft would be great IMO give it a try!

    Philip-O likes this.

    pop22 Well-Known Member

    You could build your own like stadium benches, tiered. Then you have height options by simply moving a plant vs having to mess with the shelving itself

    Discreetdigrowman likes this.

    Humple Well-Known Member

    Sadly, 3500k is no longer an option for Quantum Boards, and hasn't been for several months. I recall Robin or Stephen saying that they only stocked the 3500k until production of the 3000k boards had ramped up? Something like that anyway - either of them could shed more light on that. Personally, I quite like the one 3500k board that I have, and wish I could have another! I know the spectrum isn't that different, so maybe it doesn't really matter, but I'd like to try a run in a 2x4 under two 3500k boards so I could compare to the 3000k I grow under. Oh well!
    pop22 likes this.
    higher self

    higher self Well-Known Member

    Still pondering which boards to get. I kinda want to get some of the 120 boards but not to use wih my hlg-240-1050 as I wont have the space in my tent for the amount of boards I would need driving them that soft. Could only fit six 120’s in my tent but for the price & better coverage I think I’ll go that route. I’ll just have to buy another driver.
    Humple likes this.

    Humple Well-Known Member

    I have to wonder if HLG really expected the QB120 to be as popular as it is. They released a cheap little veg-light, but more and more often, it turns up in full builds. Pretty fucking cool.

    SensiPuff Well-Known Member

    Seems there is plenty of blue in the 3000k quantum boards. Comparable to that of a 3500k cob.
    Discreetdigrowman, pop22 and ttystikk like this.
    higher self

    higher self Well-Known Member

    It is pretty cool how customizable these lights are for our needs. Cant wait to get my hands on them!! I used to be a seed buying junkie now I just want more & better lights lol.

    frigginwizard Well-Known Member

    Not 120s but the same idea. I have strip lights running at ~half their test current less than 6" from the plants. This strain barely stretches so I won't need much more height than this.

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    dannykay Well-Known Member

    FYI, the QB120s are on Amazon as pre order to be shipped at Dec 13th.
    Just pre ordered a set of 4, will be using them as a side lighting fixture.
    And yet another fun build starts..

    Ryante55 Well-Known Member

    Sfv og I can raise the lights I just don't want to I'm willing to sacrifice that top bud so the lowers can get more light. These plants grew crazy fast they are 5 feet from the ground I vegged 16 days from clone an topped most of the plants twice to keep them from growing too much. That middle plant on the left that's the tallest is the only one that didn't get topped because it was a runt haha
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    Dave455 Well-Known Member

    Spreading those photons is key
    higher self

    higher self Well-Known Member


    Discreetdigrowman Well-Known Member

    Day 42 in the garden gonna finish early probably 54 days

    Attached Files:


    robincnn Well-Known Member Rollitup Advertiser

    4000K board vs 3000K/5000K alternate

    3000K/5000K mix actually gives a spectrum slightly lower CCT than the average.



    Very Similar Spectrum

    Last edited: Dec 6, 2017

    Budzbuddha Well-Known Member

    Mirror room corner grow -

    Blue dream ( Humboldt auto )
    Godfather OG
    Ducks Foot
    Candy Dream

    Been very chilly in the evenings dropping to low 60 ( Cali ) ...
    Plants are getting some purple stems , which happens as temps drop but also may be a bit of phosphorus def. So I bumped the CALMAG a little and P to compensate for slower uptake. Leaves are praying so I should be ok as I ride out the last weeks.
    Not creeping into leaf veins , but am watching .

    But I also added a 1/4 tsp of beastie to my watering. Plants are stinking and getting chunkier. Quantums are tighting the lower nicely and are getting pretty dense.
    Check out the lower blue dream nugs...........

    QB 288 ( 260 ) 3000k
    3 QB 304 ( 3500k ) - dimmed to around 55 watts per board.
    ( running as supplemental. )

    image.jpeg image.jpeg image.jpeg image.gif
    regoob eht

    regoob eht Well-Known Member

    Nice. Thanks For the heads up. Just bought 4 more myself.
    dannykay and pop22 like this.
    regoob eht

    regoob eht Well-Known Member

    Looks like the 288s are on Amazon as well. 12/14 shipping. Any word on the slate heatsinks?
    pop22 likes this.

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