Where to buy COB fixture and from whom.

usernamereview

Well-Known Member
I'd like to buy. I thought because there was so much encouragement amongst people to DIY COB that there would maybe be people who are now selling them over eBay.
 

Atulip

Well-Known Member
You're probably better with hid on that budget if you can't DIY. It would be difficult to DIY light a 4'x4' on that budget.
 

Growmau5

Well-Known Member
I'm looking at Mau's diy COB videos's in free time and trying to get idea if its something that I could take on.
Hey broham, I am happy to help as I believe you would get the most bang for the buck with some kind of kit. It is very easy to assembly with minimal tools. If you do go with a COB kit, just start a thread on your build and tag me @Growmau5 in any post and I / we will walk you thru it.

or, if you are looking for something complete that can act as an enhancement to run along side of your existing Mars, a dual Vero29 unit from Tasty, Timber, or Northern grow lights would be a nice starting point. probably a 4000k to accent what you already have.

@Pleasant Peasant 's build integrating a Mars with COB kit

pleasant peasant build.jpg
 
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SoOLED

Well-Known Member
You're wanting to diy or buy a pre made fixture?

even with DIY, hes short on budget.


get that tent, cause closets are hard to work with.

if you get that get the 4x4: and I'm going to go with tasty since I own them and seen what a T2-2100 could can do: you will need (2) T2's that's $750+/- with shipping. (over budget still) but if you want cobs even DIY would save you only a few hundred still over your $350-450(guessing) budget.

you can veg with 1, but if you want proper flowers you will need 2

if you go the closet, I again have used them, and I hate to say it: but the current T3-2100 is not a good option in its current state. though (2) T3's end to end would blow up a 2x6 closet.
the problem with the T3-2100 its dumping therms like an upside down water fall on the flir: the heat sink gets thermally saturated faster then the one fan can proper exchange.

I make this assessment based on the T2, which is exceptional, on the fan to heat sink exchange. and is by IR/filr gun tested cooler then the room, vs the T3 which is 4-5 degrees hotter the the room.

to cover that 9x10 just a mean cost no matter what company you choose: $4,200 that's about 12s cob per 3x10 line. again just a guess ballpark wise.
 
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SoOLED

Well-Known Member
Hey broham, I am happy to help as I believe you would get the most bang for the buck with some kind of kit. It is very easy to assembly with minimal tools. If you do go with a COB kit, just start a thread on your build and tag me @Growmau5 in any post and I / we will walk you thru it.

or, if you are looking for something complete that can act as an enhancement to run along side of your existing Mars, a dual Vero29 unit from Tasty, Timber, or Northern grow lights would be a nice starting point. probably a 4000k to accent what you already have.

@Pleasant Peasant 's build integrating a Mars with COB kit

View attachment 3698663
hes hasn't stocked the vero29's for a while in unless he back ordered: but its always out of stock.
 

Will Thayer

Well-Known Member
@SoOLED yeah, it looks like $350 leaves him $100 short to pursue some of these "better" options. so what does he do, just go HPS, some kind of DIY 315 CMH, or save up a little.. I have some stuff I need done if @usernamereview wants to earn $100. Do you know how to operate a chain saw or excavator?
I just had a homoerotic daydream with you and I working in the backwoods wiping the sweat from our brow and sharing a water bottle. Swapping man jokes and mocking each other's prowess with a chainsaw. No touching though because I do not think I am actually homosexual. Your helpfulness and enthusiasm for design just gives me a little man crush is all. I am rather handy with a chainsaw none the less.

4e20fa631a7514ea60268175f67ec7f2994e6eaae7f6e994cc73e35e57c76746.jpg

Cheers,
Will
 

SoOLED

Well-Known Member
@SoOLED yeah, it looks like $350 leaves him $100 short to pursue some of these "better" options. so what does he do, just go HPS, some kind of DIY 315 CMH, or save up a little.. I have some stuff I need done if @usernamereview wants to earn $100. Do you know how to operate a chain saw or excavator?
getting the tent would help, he has: 2 of these: https://www.mars-hydro.com/LED-Grow-Lights-Cannabis-Reflector-144.aspx
in a 4x4 the bounce would be a pretty big increase I think. you can always add another light later.

then he can pick up something cheap, from anywhere, used/new to veg in the closet.

meanwhile save, money. keep watching growmau5's vid's ???

Atulip: already said the cheapest 4x4 solution. 600 DE w/ballast for like $250.00 that's a home run IMHO. even if you ran cobs, you would be pretty close in wattage vs 3 T2's (495w) 2 T3's(512w)
Plus leave the MAR's in for spectrum. you will be growing heads for sure.

this is all based on a 4x4, with a 600 de and your two mars, I think eek by in a 5x5.

none of this includes enviro, nuets, or miscellaneous.
 

Airwalker16

Well-Known Member
I just had a homoerotic daydream with you and I working in the backwoods wiping the sweat from our brow and sharing a water bottle. Swapping man jokes and mocking each other's prowess with a chainsaw. No touching though because I do not think I am actually homosexual. Your helpfulness and enthusiasm for design just gives me a little man crush is all. I am rather handy with a chainsaw none the less.

View attachment 3698707

Cheers,
Will
Woooow...
 

usernamereview

Well-Known Member
I'm going to hopefully get my grow room significantly "set up" this weekend and will take clear pictures of the bare area's to show anyone generous enough to help. Having everything cleared will make it easier to see whats what. Maybe rethink how much bigger or smaller a "Vegging" tent I need.

GrowMau5 I haven't had enough time to fully view your DIY videos but when or if I do attempt to build I will definitely start a new thread and tag you. TY

Also I do have more money to spend, $350 is about the mid-point. I think I just need to get what I have set up, take pictures, and decide on how much of the rest of the bedroom I want to take up with a Veg Closet and whether after looking at those things whether I want to take over the whole rest of the bedroom and use that for open flowering.

SoOLED is right about what I have so far the (2) Mars 144 Reflector Series. The coverage on these is 2x4, so they are perfect for the 6.5'ft long closet (28" long,actual). I like the fixtures long shape and spill of light coverage. I was hoping to continue buying fixtures in this shape whether they either be an LED fixture or COB. Then I could intermix and change around lights whether they be in the closet or grow tent, or even the rest of the bedrooms floor plan if I decided to add more fixtures to fill the whole room.

Its a bit much, and I've never set up or grown before in any capacity. I just know that I have one extra room in my house and it would better be served to grow plants for me to help alleviate my condition.

I also found at work that I have a light tester to measure the power of the lights so when I get the Mars fixtures up I'll take a pic and let you know where they came out.
 

Growmau5

Well-Known Member
@usernamereview sounds good man, you seem like a really nice guy & I know that myself, & others are eager to recruit you into our LED cult. Some pics would be cool & we can keep this thread going as: newer grower ballin on a budget.

@Airwalker16 i know some guys give you a hard time around here, for whatever reason. But I :leaf:heart u. (sorry no heart emoji:P )

@Will Thayer it is ok if you are a little bit homo. I accept you . And I would very much enjoy working the land with you someday. but we must drink tall boys out of paper bags and crush the cans on our foreheads to prove our masculinity. #nobrokeback
 

coreywebster

Well-Known Member
Hope you all realise that usernamereview is going to turn up in a weeks time with a nice new COB set-up but missing a kidney or some other sellable vital organ! That's the effect of seeing all your DIY and Bought COB lights has on a man.
A man must ask a man a question.. How does a man unsee what a man has seen?
 

GroErr

Well-Known Member
I'm going to hopefully get my grow room significantly "set up" this weekend and will take clear pictures of the bare area's to show anyone generous enough to help. Having everything cleared will make it easier to see whats what. Maybe rethink how much bigger or smaller a "Vegging" tent I need.

GrowMau5 I haven't had enough time to fully view your DIY videos but when or if I do attempt to build I will definitely start a new thread and tag you. TY

Also I do have more money to spend, $350 is about the mid-point. I think I just need to get what I have set up, take pictures, and decide on how much of the rest of the bedroom I want to take up with a Veg Closet and whether after looking at those things whether I want to take over the whole rest of the bedroom and use that for open flowering.

SoOLED is right about what I have so far the (2) Mars 144 Reflector Series. The coverage on these is 2x4, so they are perfect for the 6.5'ft long closet (28" long,actual). I like the fixtures long shape and spill of light coverage. I was hoping to continue buying fixtures in this shape whether they either be an LED fixture or COB. Then I could intermix and change around lights whether they be in the closet or grow tent, or even the rest of the bedrooms floor plan if I decided to add more fixtures to fill the whole room.

Its a bit much, and I've never set up or grown before in any capacity. I just know that I have one extra room in my house and it would better be served to grow plants for me to help alleviate my condition.

I also found at work that I have a light tester to measure the power of the lights so when I get the Mars fixtures up I'll take a pic and let you know where they came out.
Just a comment that could save you some disappointment related to those Mars 144 fixtures. I have a bunch of them, when I started indoor I bought a bunch cheap. After 2 runs flowering though I switched away from them for flowering. That said, I still use them and haven't had a single failure, not even a diode in any of the 6x panels I have. I only use them for clones/seedlings and vegging, for that purpose they're quite good, they produce next to nothing in heat so they can be used in small spaces and it's easy to dial in the environment. But by the time you get to flowering, I'd highly recommend any of the COB lighting or CMH mentioned in posts here vs. the Mars. While they can technically flower plants, any of the other options mentioned here will give you double/triple the weight. Whether DIY or off-the-shelf, sounds like some of the modular smaller COB designs might fit well into your space. You could start slow and add later as you go. Good luck...
 

usernamereview

Well-Known Member
@GroErr , thats the kind of real info about the Mars 144 fixtures that I was looking for. At least they're good for something (Vegging) and they could be used for something until I figure out what proper lights I want to use for flowering.

I won't be buying anything but LED's or COB's so traditional Halide or Sodium are out of the equation. I don't like the idea of having to account for removing the heat from either of the spaces I have to grow.
 

GroErr

Well-Known Member
@GroErr , thats the kind of real info about the Mars 144 fixtures that I was looking for. At least they're good for something (Vegging) and they could be used for something until I figure out what proper lights I want to use for flowering.

I won't be buying anything but LED's or COB's so traditional Halide or Sodium are out of the equation. I don't like the idea of having to account for removing the heat from either of the spaces I have to grow.
Yeah that was much my take when I went indoor and I like those panels for vegging. The change in spectrum using either COBs or CMH (I use both) for flowering does a nice job when you flip them and imo puts them in great shape for flowering. This is my current flowering round, half the room closest to the camera is 3x 100w Tasty 3590 COBs, the back half just going into stretch is a Sun Systems 315w CMH/LEC. Both produce some nice bud for the wattage, either one can pull a lb. if you're growing for weight.

Camshot Flower Room Day40-Day12 06-03-2016-COBs.jpg

Edit: I manage the heat in that room with 4" intake and exhaust, plus a couple of fans for ventilation. No special cooling systems or the like and I can keep temps below 80F year round.
 

usernamereview

Well-Known Member
Is there any mix of colors recommended with the MAU5-IV(CXB3590) Grow Kit?

I'm thinking I could replace the two Mars lights for flowering in the closet with one or maybe two COB fixtures. A CXB3590 with 5 Cree's I think could cover the 6.5'ft long closet for flowering, or I could add a smaller fixture either COB or other LED to fill gap.

So any suggestions before ordering?
 
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