Have any of you DIY COB Growers finished a crop under 1000W DE HPS? - POLL

Have any of you DIY COB Growers have actually finished a crop under 1000W DE HPS?

  • Yes

    Votes: 32 29.1%

  • No

    Votes: 78 70.9%
  • Total voters
    110
Trippyness

Trippyness

Well-Known Member
Sativied said:
Looks horrible on both sides... Left is just silly.

Anyway, that comment about color (apparently on just leaves in that pic), it's interesting you sort of present it as a positive. It's probably partly from the higher blue level, increasing anthocyanin levels, but a strain that otherwise would stay green becoming purple/red is often not actually a good sign, it indicates a premature chlorophyll production failure or breakdown or excessive blue, green and uv light, photoinhibition (light induced decrease in photosynthesis) and/or too cold leaf and/or roots temp. There is a myriad of reasons they "show more color" and the ones responsible are unlikely postive in this scenario.

Funny those fans pointing towards the leds... thanks for posting. :)
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My guess is cold temps. I grow under LED currently and good results, but will be getting an ACDE hood and DE fixture.
LED is great for hobby grows with limited budgets for the future, but for commercial grows or even large personal grows DE is the way to go.
Glad someone agrees, just not economical.
 
Trippyness

Trippyness

Well-Known Member
a mongo frog said:
Do you have experience on large scale gardens?
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I do have experience running larger grows.
I also have several mates running warehouses who all run DE, 2 of which have tested LED and are back to DE.
I am currently about to setup a reasonable size Medical 10 x 10 running DE.
COBS are great if you love washing money down the drain.
anyone ever have a LED last 50,000 hours? No, I have had LED burnout before.
COBS are hobby, enough said.
 
testiclees

testiclees

Well-Known Member
Trippyness said:
I do have experience running larger grows.
I also have several mates running warehouses who all run DE, 2 of which have tested LED and are back to DE.
I am currently about to setup a reasonable size Medical 10 x 10 running DE.
COBS are great if you love washing money down the drain.
anyone ever have a LED last 50,000 hours? No, I have had LED burnout before.
COBS are hobby, enough said.
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Says a nit wit who uses a heater for lighting.

DE is a steam locomotive in the age of levitating trains.
 
Abiqua

Abiqua

Well-Known Member
I didn't know eyeballs could detect between genetic makeup or dead flesh....from a photograph no less
 
a mongo frog

a mongo frog

Well-Known Member
Trippyness said:
I do have experience running larger grows.
I also have several mates running warehouses who all run DE, 2 of which have tested LED and are back to DE.
I am currently about to setup a reasonable size Medical 10 x 10 running DE.
COBS are great if you love washing money down the drain.
anyone ever have a LED last 50,000 hours? No, I have had LED burnout before.
COBS are hobby, enough said.
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On your 10x10 future room, what is the the estimated build cost for that room?
 
a mongo frog

a mongo frog

Well-Known Member
Trippyness said:
My parents past away in a fatal accident when I was 7 asshole.
Anyways, as usual, just trolling rather than adding to the debate
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Sorry about your parents, and i wasn't disrespecting your mother actually the opposite. I tried adding to the debate but when i told you my calculations you were right and i was wrong as your usual response to things that you don't agree with.
 
Michael Huntherz

Michael Huntherz

Well-Known Member
Trippyness said:
Typical answer.
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Says the guy who disregarded my thoughtful post written in response to him previously, thereby implying I haven't contributed. Classy. I said the Mom thing in response to your flippant dismissal of many people here who are trying to educate you on a subject you claim to wish to be educated upon.


Go fuck yourself, I mean that in the best way, go rub one out.
 
Stephenj37826

Stephenj37826

Well-Known Member
Trippyness said:
I use LED. Again I am backing up my claims with relativity.
Provide some base for your claim mate.
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That's almost like saying hey I bought a Chinese car once so all cars are junk....... Sorry but scientific fact is on the cob led side. There is no debate. Meters don't lie. Neither do integrating spheres. You know the tool that real Grow light manufacturers and university's use. I'm surely not trying to be a smart ass but unfortunately our arguments are based on facts not fiction. In a year or less we will all look back at this thread and laugh. I'm sure when the chain saw was invented Paul Bunyan said they where junk and he was better. Maybe he was better than the first iteration of the chain saw. Well we are in the age of Stihl chainsaws now. No man on earth can compete. Such is the way of technology. There will always be a newer better way.
 
Michael Huntherz

Michael Huntherz

Well-Known Member
Michael Huntherz said:
There is no person who convince you that COBs are ready at this point, you will have to wait for the data to pile up over the next year. Maybe you will need five years, ten years? I don't know how long it will take, but at a certain point you will find enough data easily consumable that you will be convinced. The price is justified because the tech is still developing. The efficiency has been improving consistently for a long time, and the price will come down. It is a matter of time, and more people taking the leap to invest in them. But it's all good, man, these fine people are just trying to give you a leg up on some good information. We all manage our own risk.

@ttystikk and his 5400 watts of COB should be something you watch closely for the next 6 months.
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Trippyness said:
I will be watching, I have run the numbers. Its not worth it.
I am a LED grower, so that should say something.
Only way COBs can be justified is of they cost less than DE or on PAR, but again still must heat the room. No worth it.
Will be watching all the threads this year. Please point me to a single COB warehouse.
Also, commercial grows must use UL and CE certified fixtures. There isnt much on the market other than hobby lights.
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You will be watching, and, but, also you've already come to a conclusion? Fascinating, tell me more.

You use LED, oh that's nice, where's your dog in this fight?

The room will be plenty warm, HVAC is something you mustn't understand well.

I don't know anybody in any Cannabis warehouse. I know a few people putting tens of thousands of their own cash into COBs, and I can read teh graphs. Herp Derp.

And you go on to imply nobody in history ever UL certified a new product.

Just what is your deal, exactly? What are you hoping to accomplish by participating in this thread?
 
BOBBY_G

BOBBY_G

Well-Known Member
Trippyness said:
Just so you know I RUN LED CURRENTLY!.
I am comparing 1000w of de vs 1000 COB.
Both same power consumption.
DE need AC in the summer no doubt
COB needs Heat in the summer regardless
DE in the winter needs much less AC
COB still needs heat..
So, as you can see you just paid 2x the price for the same result.
Many growers are getting 1.5 + on DE.

Its very silly to think COB growers think that you hook up a COB in a warehouse and bam instant money...
No, you may not run AC but youll run heat.
You are loosing money on commercial COBS.
I love COB for small grows, but commercially is just absurd from a business and ROI standpoint.
Now as you stated, bulb changes yearly. COBS also loose light yearly.
I just dont understand how you can think you can justify the cost for the same results.
5k a year or less for bulb changes is pennies, not even 100% needed at all. When using ACDE you can get the lights way closer, so the 10% loss is much less over a year.
Its absurd to think that you think COBS dont loss efficiency over a year..
They are not practical for large scale grows.
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sorry man, ill let others to pick that apart. too many assumptions
 
BOBBY_G

BOBBY_G

Well-Known Member
Trippyness said:
I use LED. Again I am backing up my claims with relativity.
Provide some base for your claim mate.
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how bout this for some base

what kind of LEDS are you using

unless they are modern BML/fluence, california lightworks, or apache, id say you should be thrilled to be equalling HPS in GPW
 
J Bleezy

J Bleezy

Well-Known Member
I've gotta say I'm really questioning only having to use ac if using a lot of DE's. I already had this conversation with my buddy who runs 9 of them, I'll ask him how many BTU's his unit is, but I already know it's a big one.
I need ac for only 2000w of old school hps. They went from 36% efficient to 42%, that's not that big of a difference in heat and add to that problem because most people are not using the acdc air cooled reflector.
 
Sativied

Sativied

Well-Known Member
Trippyness said:
Typical answer.
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Yeah they get nasty really quick if you try to debate based on facts rather than fiction.

Abiqua said:
I didn't know eyeballs could detect between genetic makeup or dead flesh....from a photograph no less
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It's very doable to detect what possibly did and did not cause the coloring based on pics, it's not just eyeballs you need for that though, it requires more than half a brain, relevant knowledge, experience, and intellectual honesty to process the images with some accuracy - things not in your arsenal. Dead flesh, wtf...

Trippyness said:
My guess is cold temps.
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Probably often a factor but not necessarily cold in that specific example, the top leaves look crispy even. Below is the result of a recently cold induced purpling plant. These are lower buds, top is hard to keep cold with hps above it... It's cannalope haze, have been growing it for years, normally doesn't get any color and took very low temps (as low as 16c). Growing afghan crosses with a plant near the intake turning purple year after year makes it easy to observe how it progresses.
coldinducedpurpleCH.jpg coldinducedpurpleCH2.jpg
Cold induced purple is also not always the same process as cold induced reduction of photosynthesis and metabolism causing premature yellowing and synthesis of anthocyanin with color as a result. One fucks up the plant (similar to 'misfeeding'), the other doesn't.

Whatever the exact cause(s) in GGs example, the leds are obviously directly or indirectly to blame and gg could possibly do his customers a favor solving the problem that is causing reduction in photosynthesis. Ironic really, as usual, because led technology is very suitable for growing healthy colored plants including bud to the max (in terms of color anyway...), but instead is misused with still color as a result but as an obvious symptom of a underlying problem.
 
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