Cmh Vs Led O

[heisen]

your telling you pulled 32 ounces dry off that pic but i pulled 24 dry off this one>?WTF

 

[heisen]

"That's like your opinion man." :smoking:

Everyone exaggerates there yields.I dont but i see so many other people that do.I can show that pic to 10 experienced growers who have cut there fair share and i promise you 9 out of 10 will say 14 to 16 dried if that that knows what there talking about.Sorry to break ya balls man i just gotta call bullshit when i see it.

 

[CallmeTex]

You won't get the density with CMH that you do with Cob lighting properly powered and spaced. Grow how you want to bro.

 

[heisen]

You won't get the density with CMH that you do with Cob lighting properly powered and spaced. Grow how you want to bro.

I hope your kidding

 

[CallmeTex]

Some grows are better than others and the avatar pic was from a seedling run. This grow pulled over 2 elbows in a 4x4 from under 600 watts of Cree 3590 3500K. Organic soil btw.
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2 ELBOWS in that pic your crazy as hell and thats a fact.Ive dropped and chopped my fair share and i can promise you im pretty damn good at estimating a chop but there is no way in hell 2 bows dried in that pic.LOL hell to the naw

Hey buddy, you got me riled up enough to look at my notes, and you're right. That space only yielded 630 gs. My bad man. Still not bad for organic soil and pulling at 56 days.

 

[heisen]

Hey buddy, you got me riled up enough to look at my notes, and you're right. That space only yielded 630 gs. My bad man. Still not bad for organic soil and pulling at 56 days.

630 wet but i still say in that 4x4 you was lucky to get 14 zips and thats just my opinion from what i can see.Maybe a tight node indica with some perfect spacing but not them stretchy sativas in organic.Sorry man your gonna have to sell that to the tourist.No big deal but to say that COB is superior to CMH is asanine considering people who build COB fixtures still will recommend CMH in certain applications.They both have there place like Autoflowers VS photos but I think if ol dude went with either CMH or COB he will still be happier than what he has.
COBS have a more direct footprint and CMH does not.CMH loses on penetration thats why most guys experienced with it run Scrogs or training But the full spectrum and added reds make up the difference.I have had no problem whatsoever getting buds to bulk up with CMH.Watt for Watt they will kill HPS with all things being equal.I know ive ran clones in the same scenario and CMH wins.
i would love to build or buy a COB setup same watts for a 3X4 and do a side by side detailed comparison with CMH in DWC.The nutes wont lie.You can tell right off the rip usually by how the PPM is drifting as to what the plants are eating.My CMH grows demand 7 ML per gallon of calmag vs my HPS that i can get away with 4.That tells me right there the plants are photosynthesizing at a more rapid rate under CMH.That would be impossible for an organic grower to do.Growing in DWC we see and experience things the dirt baggers dont.We can dial our plants in like a computer program.The lights over there head tells all

 

[FrenchOG]

Never thought choosing a light would be so fucking hard lol. But I can't wait to be a plant daddy again! 3 more weeks!

 

[FrenchOG]

How about a 315 cmh and 1 COB in each corner? Can COBs hang by themselves?

 

[sixstring]

More yield per watt is definitly a misconception and false.Also Leds put out there fair share of heat.I personally dont see the quality of LED compared to CMH.Definitly dont see any jump in weight over CMH.No way in hell your win that argument

if ya do some reading on electrical efficiency you will come to understand how different lights produce dif amounts of "lumens" per watt.so in this case i will use your beloved cmh as an example.standard hps design was always around 22 to 25% efficient so ya got maybe 25% actual light and 75% heat.then came the cmh setups and some of the new 630w de lamp cmh setups at hitting 35-38% efficient so 38% light and 62% heat. well now i have cob setups that are pushing 60% efficient so 58% light and 42% heat.so yes just like planes are faster now then they were in the 1950's lights are also getting brighter with less power lol.we also have way more control over spectrum using cob with colors ranging from 1750k to 6500k so tuning one to match your favorite light is no big deal.if ya wanna get into a quality debate i been there done that.im using about 40% less power and my yields have been up about 15-20%.if i mono cropped im sure it would be 25% consistantly.

all i really care about is the frost factor

 

[DemonTrich]

Some grows are better than others and the avatar pic was from a seedling run. This grow pulled over 2 elbows in a 4x4 from under 600 watts of Cree 3590 3500K. Organic soil btw.
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So you pulled 2 pounds from 1x600 led?

Sorry, I'm not buying it. I doubt even 1lb from a 600 led may be achievable. And that' from a custom built, epic elite strain room. I can get 1 lb with 1x 315, BUT that' only when I run 4x darlins net under same hood.

 

[sixstring]

1.5 grams per watt is not out of the question with led and theres a few documented grows of this.guys are looking to hit 2.0gpw. hell i see people claim 2.5# per light all the time and even 3 pounds a light. i hit 20oz with 530w of cobs on my second run under the setup with my mk using 1 plant in a 10 gallon pot.im sure i coulda hit 1.5gpw if i woulda put 4 or 6 plants under that setup

 

[Rootbound]

I went from about 900 to 600 when I made the cmh swap.



30,000hrs for the Philips 942 t9 bulb. At 18/6 is over 6yrs. 12/12 is over 5yrs.

Just curious why you just purchased cmh bulbs then? Did they replace the damaged ones? Did you get 5 or 6 yrs out of your old ones? Glad I dont have to go through that anymore with LED was my point you quoted me on.

 

[CallmeTex]

So you pulled 2 pounds from 1x600 led?

Sorry, I'm not buying it. I doubt even 1lb from a 600 led may be achievable. And that' from a custom built, epic elite strain room. I can get 1 lb with 1x 315, BUT that' only when I run 4x darlins net under same hood.

You can see up above that I retracted that statement. It was only 630 gs. So a measly 1.05 g/w in organic soil with limited training and a height restricted veg area. Six is spot on with his analysis, and kills it none stop with the cobs. Check out his grow.
To each his own.

 

[CallmeTex]

How about a 315 cmh and 1 COB in each corner? Can COBs hang by themselves?

Yes and Yes. This would be a great setup.

 

[heisen]

if ya do some reading on electrical efficiency you will come to understand how different lights produce dif amounts of "lumens" per watt.so in this case i will use your beloved cmh as an example.standard hps design was always around 22 to 25% efficient so ya got maybe 25% actual light and 75% heat.then came the cmh setups and some of the new 630w de lamp cmh setups at hitting 35-38% efficient so 38% light and 62% heat. well now i have cob setups that are pushing 60% efficient so 58% light and 42% heat.so yes just like planes are faster now then they were in the 1950's lights are also getting brighter with less power lol.we also have way more control over spectrum using cob with colors ranging from 1750k to 6500k so tuning one to match your favorite light is no big deal.if ya wanna get into a quality debate i been there done that.im using about 40% less power and my yields have been up about 15-20%.if i mono cropped im sure it would be 25% consistantly.
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all i really care about is the frost factor

Not interested in bud shots.can get them from cfls.your post was attributed to efficiency meaning how much weight can you pull in any given area with the amount of watts you used.your entire post was about grams per watt but you posted bud pics.lets see some area pics packed full of dense colas.
Also frost on buds is way more than light spectrum.I think your attributing the lower heat you get with led to higher trich production.that is a fact.cool temps and genetics play a bigger role in trichs than anything.i can run any clone you got that u get frost from under CMH or HPS and get it as frosty if not frostier.
I personally don't think there is any real world difference.trust me I can afford any led fixture on the planet and researched this subject extensively before I went with CMH.the only difference is start up cost.from all the grows I've seen I personally thought cmh had the edge.
I'll be buying a COB setup this week and do a side by side comparison from day 1 on my Scott's OG clone in Dwc.both will be same wattage.

 

[FrenchOG]

Not interested in bud shots.can get them from cfls.your post was attributed to efficiency meaning how much weight can you pull in any given area with the amount of watts you used.your entire post was about grams per watt but you posted bud pics.lets see some area pics packed full of dense colas.
Also frost on buds is way more than light spectrum.I think your attributing the lower heat you get with led to higher trich production.that is a fact.cool temps and genetics play a bigger role in trichs than anything.i can run any clone you got that u get frost from under CMH or HPS and get it as frosty if not frostier.
I personally don't think there is any real world difference.trust me I can afford any led fixture on the planet and researched this subject extensively before I went with CMH.the only difference is start up cost.from all the grows I've seen I personally thought cmh had the edge.
I'll be buying a COB setup this week and do a side by side comparison from day 1 on my Scott's OG clone in Dwc.both will be same wattage.

Youre gonna have to send me samples so I can judge which is tastier then.

 

[heisen]

And I will do a fair and balanced comparison.i won't favor one over the other.
Do any of you Cobb experts have a setup you would reccomend?I would hate to beat the Cobb setup and someone say they were a shitty brand.
I can build it also no problem.just point me in the right direction.Im all about some real world comparison

 

[sixstring]

Not interested in bud shots.can get them from cfls.your post was attributed to efficiency meaning how much weight can you pull in any given area with the amount of watts you used.your entire post was about grams per watt but you posted bud pics.lets see some area pics packed full of dense colas.
Also frost on buds is way more than light spectrum.I think your attributing the lower heat you get with led to higher trich production.that is a fact.cool temps and genetics play a bigger role in trichs than anything.i can run any clone you got that u get frost from under CMH or HPS and get it as frosty if not frostier.
I personally don't think there is any real world difference.trust me I can afford any led fixture on the planet and researched this subject extensively before I went with CMH.the only difference is start up cost.from all the grows I've seen I personally thought cmh had the edge.
I'll be buying a COB setup this week and do a side by side comparison from day 1 on my Scott's OG clone in Dwc.both will be same wattage.

So why did you post bud pics then lol.
I've been growing in the same 12 x 20 shop for 10 years now,have used 600w hps gavitas,even cmh before they were cool haha.im all about testing all lights even shitty Mars panels.my claim about yields comes from my shop not just one light.you will be pleased with the cob setup if you give it a fair shake.cob LEDs don't throw heat down at plants like hid lights so keeping temps a bit higher under the cobs will help the plants.like if you run 78f under cmh try running 80 to 82f under the cons.makes a big difference.

 

[gwheels]

For my next round i will run 240 watts of mcob and 200 watts of vero cobs. The 440 watts should compare roughly to the 315. I am curious to see how it works out. I hVe about 6 weeks.of flower on tbis run. Then i will run train wreck and raw dieael. And experiment. My.mcob is 9 62 watt cobs but i can turn on 4 or 5 or 9 cobs. I will do 4 and add the timber.
At the very least it will be intereatimg if i dont fuck it up like the current run.

 

[kansabis]

And I will do a fair and balanced comparison.i won't favor one over the other.
Do any of you Cobb experts have a setup you would reccomend?I would hate to beat the Cobb setup and someone say they were a shitty brand.
I can build it also no problem.just point me in the right direction.Im all about some real world comparison

Sorry but after reading through your posts its hard to believe you wont favor the cmh because you already are lol,none of the people you are debating with has stated anything but their experience and opinion,you as well,it has been established both led and cmh are very good choices,lets leave it at that and all keep doing what were doing,growing great bud.