cob

  1. qwerkus

    Strips vs COBs

    Hello, It's been a while since I checked upon the latest development in growth LEDs, though I noticed that more an more people are experimenting with led Strips. Back in 2015, when I came up with the first citizen COB in this forum, it was all about single, powerful, under-driven chips to...
  2. DesertPlants

    Photon-Bomb Question

    So, I just built a 400w COB LED I am running in a 2.5 x 5 tent. I have a 315W CMH light sitting here doing nothing. Would it be overkill to run them both in that size tent? Will a 400W LED be enough on its own?
  3. G

    Switch to LED.. Designing For VERY Small Space

    Hello gang. I'm a non-marijuana grower and you guys here have taught me a tun about CFL's that lead to some great DIY light builds. 6 years ago i gave one to a friend. He still uses it today and refuses to use anything else for starting his garden seeds. I love to tinker and i'm working on a new...
  4. Ghost of Davy Jones

    3000k or 3500k for flowering?

    Hey friends.... I wanna get a new light and i have finally decided on one, however it comes in different colors. I'm gonna get either the 3000k or the 3500k but not sure what would be better with this type of light. Any input is much appreciated. Thanks all! $579.00 Model 4VS size...
  5. D

    New grower seeking advice on potential setup

    Hello all! I'm a new grower trying to do my first indoor grow in Oregon. I've been spending the couple months researching what to buy and lurking on here and loving all the great info I've been finding. So I'm here to hopefully get a little advice before I pull the trigger on my setup. My plan...
  6. N

    Help me build first led grow from zero

    Hey guys, I plan to build a grow (no size specified yet, the maximum I can) and use 4 vero 29 gen 7 C 3000k 80 cri, can anyone help me with choosing what driver to use. Im lost to why people dont use higher w and ma, that in my starter eyes looks like would be more efficient. Like, wouldnt the...
  7. Ghost of Davy Jones

    Led and Cob Light with all the bells and whistles...

    Hey Friends... Seen this light and it has all these features like built in timer, wireless remote, and dimmers ect... Is this the way of the world now? Should i be dimming my lights and shit? Whats wrong with a basic timer and light that turns on and off? Can someone please explain to me...
  8. Roche Mars

    Big Big day tomorrow

    Ahh the great indoors! Lol, hey everyone! I've learned so much more from my second grow it's crazy, like I got a male again this time but also a female at long last!!! Finally! This is a huge accomplishment for me. All the work I put in and my experience with actually growing a plant on my own...
  9. stupidcracker00

    Luminous CXM22 w/ HLG 320H-48A Questions

    What it do RIU, What is the max number of CXM22 I can run with a HLG 320H-48A? Here is the spec sheet of the HLG. The CXM22's FV = 36v. http://www.mouser.com/ProductDetail/Mean-Well/HLG-320H-24A/?qs=DNaZHaGatO2tAtx4g0zPkg%3D%3D I just bought 8 CXM22 to run on 2 of these HLG Drivers in a...
  10. maximum autism

    20 000 lumen Bridgelux COB headlights?

    Just throwing this out there, could a couple sets of 4k/3k COB headlights potentially replace an equivalent setup with reflectors? Maybe hung naked for some vert growing? Some of these are made with COBs that go into high-quality builds, has this already been looked at? I might be late to this...
  11. PSlacks

    How far should SCROG net be from pot?

    What's going on RIU, Hope everyone is doing well today. Got my first grow setup about completely finished and I'm about to put my seedlings in soil this weekend. I'm just curious on your guys opinion on far my scrog net should be from the top of my soil based on my setup. Here it goes: I have a...
  12. xX_BHMC_Xx

    Round 2: Malibu Pie

    What's up everyone! It's that time again! The next round in the cabinet has begun and I'm happy to say I'll be running some Malibu Pie by Ocean Grown Seeds. I'm really looking forward to the terps in these! After 24hrs in a glass of water, and 24hrs in a paper towel, all 4 have popped nice...
  13. ZeroTrousers

    Geyapex LM-P4 Grow - DinaFem Blue Cheese

    This is the (more or less) official grow log, testing the performance of the Geyapex LM-P4 COB light. Here's a link to the album: https://imgur.com/a/ZKLnV Starting Space: A 2x2x5 Des Jardin Dark Street tent, containing 2 6" clip fans The medium is Millennium Soils coconut coir, the brick...
  14. newgrow16

    3rd MMJ Grow

    Due to personal limitations i built an outdoor shed without ac in socal last year. After grows under 2x BD 400 and a Kind 750 led i upgraded to Timber cob led's. My grows under BD/Kind, 8 weeks veg and about the same for flower, from seed using fox farms ocean forest, produced about a pound...
  15. MadLeaf

    Need help building a light

    So I've been lurking here for awhile now and I finally decided to replace my good ol' HPS with LEDs. My tent is a 4x4x6.5 and I'm doing a 2 plant scrog set up (currently under a 600w SE HPS) At first I thought I should go with 6 3500k and 4 3000k CXB3590s powered by 2 MW HLG-240H-1400B drivers...
  16. whitebb2727

    Geyapex lm-b4

    It arrived. A geyapex lm-b4 with 4 citizen cobs and meanwell driver. I popped the top off and took pics of the inside. The only issue I have is the heat sink needed to be full length and not pieces. I don't k ow how well it would cool if one or both fans went out.
  17. ZeroTrousers

    Geyapex LM-P4 Unboxing and Under the Hood

    Heya Rollitup. I received my test unit from Geyapex today and wanted to show off a bit, especially "under the hood". So, here's how it came, less the top foam: http://imgur.com/Q8bx1Z7 Nicely packed, there was even a small hole in the box and it didn't even come close to the unit. Now...
  18. PSlacks

    Help hanging cob lights

    hey RIU folks and hope everyone is doing well this fine morning. Okay in a rush so gonna get to the point quick here, I've pretty much decided on going with a cob setup and I know they're about $40 apiece and all the details but I don't quite understand how I would go about hanging them? It...
  19. ZeroTrousers

    Geyapex Test Poll - Help me choose what to grow

    Rollitup, I want your input! I'll end up growing the winning entry, or in the event of problems the runner up. I've been selected as one of the testers for the Geyapex COB lights, specifically the LM-P4 model. This will be going into a Des Jardin 2x2x5 tent, making for 55w of COB per sq/ft...
  20. S

    Help Me Choose: DIY COB or Quantum Boards - 4x4 Flower Tent

    Hi All, Long time lurker here. Wanted to gather some opinions from the knowledgeable folks here, if you might kindly oblige. Background: I have completed 4 grows successfully (In large part thanks to wealth of info here at RIU). For the first 3 grows, I used 5 gallon Hempy buckets. For the...
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