3000k

  1. S

    quantum boards setup opinions

    I'm planing to setup a new grow tent, 80X80X200cm (2.6x2.6). which I'll use for growing two photoperiod plants in coco coir. I want to grow short plants , I'm not necessarily aiming for high yield but of course for quality yield. I want to go for QB and i have two options from two local shops...
  2. Retr0_ZA

    LED Glass Tube effectiveness

    I recently got 2 LED Glass Tubes. These tubes produce 2400 Lumens while running at 24W/230V with a CRI >=80 and 6500K. Will a combination of 6 of these bulbs be enough for a successful grow from seed to harvest? Will a combination of different LED Glass tubes work better? For instance a...
  3. J

    600w HPS Flower Tent Upgrade? Emerson Effect?

    Hello, I currently have a rectangle hood around a 600w hps going in my 4x4 flower tent. I am installing UV Led strips along the long sides of the hood, and along the shorter ends of the hood I am interested in installing two new lights. I was curious, after looking into different options, I...
  4. Jusalilbetta

    Cob swap out is it possible?

    So I have a great cob setup its a tasty 300w 6 cob design. It works great in a 4x4 but it really rocks a 2x4 which I use for flowering. My question is to all the cob geniuses on here can I upgrade the cob chips to say Citizen, luminous etc... I'm just curious. I am however thinking of swapping...
  5. C

    3 XL Quantum Boards - How Would You...

    Hello everyone, This is my first post so hang in there with me. I have a 4x4 gorilla grow tent with an extension. And I also have three quantum boards. 2x XL 320watt boards in 3000k 1x XL 260watt board in 4000k My question to those who have more experience with quantum boards is in a...
  6. P

    DIY LIGHT BULD - Samsung F-Series Strips

    Hi all, I'm new to the board but have been a lurker for some time now! I have a friend who is good with electronics and I'm going to get him to build me a light. I have a 800x800 Tent and wanted to use 4 Samsung F-Series strips ( SI-B8V521560WW ) with a MeanWell HLG-320H-48B‎ driver and...
  7. JSheeze

    Mono-spectrum (50w more), or poly-spectrum (50w less)?

    2'×4' bloom scenario using E27 LED... 1 spectrum (50w more)... 493w [100% - 3000k](80CRI) or... Mixed spectrum (25w less)... 468w [11% - 6500k](80CRI) + [89% - 3000k](80CRI) or... Mixed spectrum (50w less)... 442w [23% - 6500k](80CRI) + [77% - 3000k](80CRI)
  8. CoB_nUt

    Need a lil Qb rig design help!

    Hello peoples! Thought I'd start a thread to see if it helps get some ideas tossed my way. I purchased 8 Qb120's and 2 Hlg 240-2100 drivers. These will go in a 4'x4'x6' tent. I need some rig frame ideas. I'd like a 2 frame system with 4 boards per. Don't have a lux meter at the moment or I...
  9. L

    Need some help to decide ... Lights&Space

    1st. of all I have no experience at all ... I thought of a 2x2 or 3x3 space or anything in between. For the light im getting gen7 vero 29's (was looking into the cxm22's wich are the best according to some charts for ppfd but couldnt find really anything about them besides in the charts ...
  10. Buddhafamily456

    Quality in Flowering, 3000k or 3500k?

    I’m building a light using Samsung f Series strips and was wondering if anyone could tell me what spectrum was best to produce higher quality, 3000k or 3500k?
  11. calitrees916

    LED grow from start to finish

    Good afternoon everyone, so I plan to do my best to document this veg and flower cycle from start to finish with my DIY LED rigs. I have built 2 rigs each composed of 6 HLG QB304s with a mix of 3k and 4k in staggered placement to give a mixed spectrum. I have them powered with 6 hlg-240h-c1050a...
  12. L

    If 3000k is good enough for QB, why don't we run them in T5s?

    Pretty much the title - Is there a reason the popular advice is to run 6400k Veg -> 2700k Flower, or 6400k all the way through? Would it not be reasonable to suggest 3100K all the way through for T5 (provided you are not so inclined to just flip your bulbs)? The specturm charts I look up (as...
  13. AutoNorCal

    Small time farmer here, good choice?

    Okay so I know amazon has cheap and crappy leds which should be avoided like incurable VD! That being said I have read great things about timber, rapidled and few other brands. I’m not afraid of dyi kits This is what I’m looking at...
  14. jackdajoker

    DIY decisions Vero 29 build 2ft by 2ft tent

    Hello people, Been thinking about Switching over to COB LED's from my 250w HPS, in my 60cm X 60cm (2ftX2ft) flowering tent for a couple of weeks now. I'm not running Co2 so was going to try aim for the 1000/1200 PPFD range. The reason for the swap is duo to high temps forcing me to run my fan...
  15. K

    Clu 048 1212 3000k and 4000k mix

    wat you all think about a 8x 3000k 1212c4-303m2k1 4x 4000k 1212c4-403m2m2-f1 mix are these particular models.... the right 1s
  16. HydroLynx

    3000K vs 4000K SPD curves for Samsung LM561C & Emmerson

    I have the option of less efficient 3000K led or more efficient 4000K Samsung leds. So I superimposed two relative colour spectra. But I see no significant departure between those 3000K and 4000K spectra in terms of 680nm+ relative output. Sad Emmerson. 3000K = RED and 4000K = BLUE 3000K...
  17. D

    Tasty LED 3000k 90CRI vs 4000k 80CRI grow log

    So as @Rahz had posted, I will be testing (thanks Rahz!) the TLED T22 3000k 90CRI and the TLED T22 4000k 80CRI lamps. Both are found on the following pages (for specs). https://www.tastyled.com/Tasty-LED-T22-LED-grow-light-p/t22-3000-90.htm...
  18. Y

    Will higher temperature lights (5000K) increase female to male ratio

    Hello - I am running a 3000K COB fixture, i grew 4 seedlings last time out, 3 of which turned out to be male. I was wondering if bluer light would lead to more females or is it purely down to luck? thank you
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