QB324 grow

The QBs are definitely easier to work with (mount) than strips. They're pretty good value, too, when you include the heat-sinks and free shipping if you're in the US (no free shipping for me in Australia, I'm afraid). I also like the spectrum. The only possible downsides are the higher voltage - especially if you run a couple in series - and a bit more concentrated heat from packing all those 6V/150ma LEDS in quite close to each other.
 
CoB_nUt said:
Thank you for the response. With so many QB combos out it's hard for me to decide which combo to go with. Just yesterday on amazon I saw a 4 pack of qb120's and thought to myself,"I could buy 8-12 of these and it'll work." Then I reminded myself of your thread and went hmmm..




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There are many ways to skin this cat, but four QB120s powered by an HLG-240H-C2100A is a pretty sweet setup (if I do say so myself!).
IMAG0272.jpg IMAG0539_unexif.jpg

I have two of these fixtures, in for around $220 each, at 250+ wall-watts per unit.
 
zypheruk said:
Them qb120 boards are a real nice alternative to running the more powerful qbs for a even canopy. Would be nice to see these updated with 301b's, sooner than later.
@Humple nice setup.
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Yeah, the fact that they don't need heatsinks makes them both wallet-friendly and simple to build. A cheap and easy entry into DIY lighting. And I like the greater spread/lower diode-density - I can slam these boards right on top of the plants with no ill effects.
 
Naah, lets keep them cheap! Anyone can build a damn nice light with these and not spend too much money. Budgets can get broken trying to build a light! I replaced a DIY light in a cabinet with a pair of QB 120. Got a HLG80H-54 for half price. so with shipping I've got less than $90 in that light! No frames, 1 1/2" sheetrock screws though the corner holes screw to the top of the cab. QBs are wired in parallel. total draw is 108 watts so 50 watts per board. I love it! I use the cab for breeding using small ( 3.5" ) pots and micro grows, start seedlings etc. Might try a mini scrog in there soon!


and hey, how about this idea? 9, oe even 16, QB 120 in a light for a vertical scrog? because you can run them close you could do 2 in one 4x4 tent. I keep picturing ttystik's 32oz Jillybean grown vertical using watercooled cobs........

zypheruk said:
Them qb120 boards are a real nice alternative to running the more powerful qbs for a even canopy. Would be nice to see these updated with 301b's, sooner than later.
@Humple nice setup.
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Looking great PC :weed:
When do You choose to chop? You go by trichomes ? They look done already just just wondering...
 
Humple said:
@Prawn Connery I'm curious why you chose not to space the boards further apart?
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I addressed this a bit earlier in the thread: the frames are designed to provide a smaller (3'x3'), square footprint with a bit more light penetration for a one-plant, one station set-up. This is an initial trial with two plants per station, which isn't optimal as you can see gaps in the screen.

The one-plant set-up is purely designed to address legal issues. This isn't my grow, it's my friend's - so ultimately he's responsible for it. I've been trying to convince him to reduce his plant numbers, as growing is still illegal here. That's why I built the frames the way I did. The idea is to have one plant in the middle and prune it back as it vegs so that it can be scrogged. However, you still need a little more light penetration in the middle where everything branches off the main stem. If you go back through the photos in this thread, you'll see each station is set up in rows, so there is a fair bit of overlapping light as well.

So that's the reason why we also didn't go with a strip build, which provides a much more even spread of light. This is my set-up at home. It's a 4'x2' and fully enclosed and reflected, so is obviously more suitable to strip lighting. However, it's the same wattage (400W) as each QB324 build. This is an older photo to give you an idea - "horses for courses", as they say:

4halfweeks.jpg
 
T-Time said:
Looking great PC :weed:
When do You choose to chop? You go by trichomes ? They look done already just just wondering...
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Hi mate, yeah they're pretty close. This is usually a 7-8 week strain (Wappa), but they will finish earlier in winter when overnight and average temps fall. My mate has 11 stations (9x 600W HPS, 2 x 400W LED) on a rotation and yesterday cut down three of them, so he'll get around to cutting these probably on Monday. They are seven weeks old in the latest photos and could be taken now, but the extra few days won't hurt.
 
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