IF you are new to LED and want help choosing what to buy, POST HERE!

[stardustsailor]

If you do not have an R-SPD ,then calculating LER is not possible.
Still ,almost all branded COBs are provided with a RSPD ,found in their spec data sheet .

Every single source ,even of the same brand and type ,has a slightly different RSPD .
Still those differences are considered minuscule and usually a 'standard' RSPD is provided.

Edit :At the pic you've posted it is not a Relative SPD shown ,but something else.
Highest y value of RSPD is 1 (100% ) and not 1500 something ...

Cheers.

 

[Doer]

Cool. So if you took at look at this one, could you tell me how to estimate LER?

http://www.fcopto.com/pdf/P110-15S19P_datasheet.pdf

 

[Sativied]

But your friend sativied loves IR... I wonder if he realizes that if those photons were visible, they'd still heat the canopy, but they'd also produce photosynthesis. 2 birds with one stone.

Put your hand under one of these cobs and it will get hot very fast from the visible light.

Simpleton grabbing things out of context again... that IR part was on top of the grow light produced, and for comparison should not be subtracted from the specs provided by real horticulture light manufacturers, like your leader pretended to. While you are playing with heat sinks, hps directs some of that inefficient heat as IR towards the plants.

"If those photons were visible"... yeah and if you had half a brain... and if Santa is real....

 

[Doer]

must be responding to an ignored troll?

 

[stardustsailor]

Cool. So if you took at look at this one, could you tell me how to estimate LER?

http://www.fcopto.com/pdf/P110-15S19P_datasheet.pdf

No ,as this spec sheet lacks a RSPD .
Still they most probably bear the "standard" 3000°K 80Ra phosphors .
So expect a LER somewhere between 320-330 .

*These COBs are notorious for their low efficiency ,when driven hard.
(~ 20-25% rad. efficiency at their max rated current )

 

[stardustsailor]

Simpleton grabbing things out of context again... that IR part was on top of the grow light produced, and for comparison should not be subtracted from the specs provided by real horticulture light manufacturers, like your leader pretended to. While you are playing with heat sinks, hps directs some of that inefficient IR towards the plants.

"If those photons were visible"... yeah and if you had half a brain... and if Santa is real....

Cannabis Sativa L. species are not of great need of these partricular FR/NIR radiation ...

Flying Dutchmen ,need IR from HIDs ,because Holland is a rather ..tropical country ,as we all are aware of .
That is the single reason ,that LEDS will never be prefered in the greenhouses of that ...tropical country ..
Else they 'will have to use heaters,along with LEDS.

Yes,Flying Dutchmen are second in a world scale of agricultural product export ,
still condemned to grow with old tech lamps ...
Let alone that their edible agricultural products suck big time.
Tasteless, no aroma ,no smell ,total lack of nutrient value ....
Stupidity and lust for money ,combined at their " best " ....

I'm a poor southern European ,but at least the veggies and the fruits produced here ,
do have a taste ,aroma and lots of nutrients ...
Not like the northern shit ...

 

[Doer]

No ,as this spec sheet lacks a RSPD .
Still theymost probably bear the "standard" 3000°K 80Ra phosphors .
So expect a LER somewhere between 320-330 .

*These COBs are notorious for their low efficiency ,when driven hard.
(~ 20-25% rad. efficiency at their max rated current )

Yeah, but at 1/2 power, they do alright. Thanks for peeking at it.

 

[Doer]

So, according to that chart, cannabis is rather picky. It loves the light above 700nm?

Or is that a rejection chart?

 

[skunkwreck]

Any decent 300 watt leds out there for around $200 ? I know nothing about less and soon it'll be too hot for hids . Thanks

 

[Doer]

Any decent 300 watt leds out there for around $200 ? I know nothing about less and soon it'll be too hot for hids . Thanks

Do you mean the units or for DIY?

 

[stardustsailor]

Oh sure, there come the attempts at insults again... from a Greek..., those inefficient Flying Dutchmen pay billions and billions to your bankrupt southern desert neo nazi ruled country, being that all those hardworking people in NL make them the 2nd largest exporter in the EU. Lazy fuckers... all you do all day is hate the north and you're a fucking douchebag for even going there... start paying taxes.. You literally are in the shittiest shithole of europe and you think you can offend NL

Dude,you are actually the laziest people in EU.
Almost all of your workers are from southern Europe or elsewhere.
Stop watching too much TV news.
Your banks are lending our banks money .
Dutch citizens are not paying a single cent for the Greek citizens.
The whole "game" is played between banks and only banks .
Visit my country and see with your own eyes if we are Neo-Nazi ruled.
Hellas is the last free country in the world .
Or at least it tries hard to free itself from the world Banking System .
(here is your Neo-Nazis,blind man ...The world banking system )
that's why "nobody" likes us.
Cause we fight for our TRUE freedom and liberation from tje world banking system .

And yes ,we fuckin' hate North ,cause North is making a wealth ,due to the suffering South ....
Except if it sounds sane to you ,that it's because of "hard work" that Holland is the second bigger exporter of agricultural products .Yes,but firstly they had to DESTROY all the agricultural exports of Portugal,Spain,Italy and Greece.(No european antagonism ,mafia -man )
Crazy fuckin pedophils you've destroyed not one ,but several countries in order to become what you have become...
Machiavelli rules ..
And we're paying taxes ,Mr .Knowitall ...Our rich people do not ...
But I guess your rich people also do not pay taxes ,too ....
The shittiest shithole of EU ?
You wish ...
HELLAS ,IS ONE OF THE MOST BEAUTIFUL COUNTRIES IN THE WHOLE FUCKIN' WORLD ...
Thousands of dutch tourists -that keep comin' back -year after year -for summer vacations - can verify that to you,in person ...

The rest of your comments about IR are misplaced a well. It was grabbed out of context. The IR part of the spectrum is not included in the par light specs so when making comparisons one shouldn't subtract it twice for the sake of led bias. HPS directs some heat towards the plant, which in practice is often not as bad as led fans make it out to be. Compared to greece everything is cold in europe lol.. of course you run led, you have no choice. In NL however the weather is 'moderate', never gets hot, but never gets that cold either, not as hot/cold as in most places in the US and Canada...

IR is included usually both in LEDs and HIds .At least up to ~780 nm .
The PAR range is standarized as to be the 380-780 nm range...

 

[skunkwreck]

Do you mean the units or for DIY?

Unit...I don't know about building one

 

[guod]

Oh sure, there come the attempts at insults again... from a Greek..., those inefficient Flying Dutchmen pay billions and billions to your bankrupt southern desert neo nazi ruled country, being that all those hardworking people in NL make them the 2nd largest exporter in the EU. Lazy fuckers... all you do all day is hate the north and you're a fucking douchebag for even going there... start paying taxes.. You literally are in the shittiest shithole of europe and you think you can offend NL

 

[Sativied]

But, in the future waste heat of work of all kinds could become a "natural" resource.

Well, since you mentioned it, that's the plan yes. Heating homes with waste heat. From an older post:
"Together with government, the ambition has been formulated that all greenhouses constructed after 2020 are to be near-independent of fossil fuel. [...] Growing in these greenhouses will be sustainable and cost-effective. Moreover, the aim for these new greenhouses is to supply sustainable heat and electricity."
http://www.energiek2020.nu/fileadmin/user_upload/energiek2020/docs/Algemeen/Leaflet_Engels.pdf (english leaflet)

We have the most advanced horticulture LED research center on the planet... involving hundreds of large scale test setups over longer periods. None of them is trying to "beat" hps though, that's just a matter of time.

"82% of the nearly 7,000,000,000kilowatt greenhouses use every year is used for light. To put that in perspective, that's enough to power New York for nearly 2 years. And to put that in perspective, New York is in square miles 10 times larger than the area covered by greenhouses here (so bright it's visible from space...)."

Needless to say, reduce electricity cost of the lighting, including putting money in proper research is very important for those greedy dutch. Side by side by side tests with budgets of hundreds of thousands of euros. HPS will be ditched as soon as it's really ready to in avery aspect.

Dude,you are actually the laziest people in

That's all just too ridiculous dude. The facts in europe are very obviously different. So is that what they tell you in Greece lol... You're a complete idiot, and a douchebag. But, since you seem to willing to help Doer and I don't give a fuck about with people in Greece think about work ethics in NL (wow...) whatever you say buddy

 

[Sativied]

View attachment 3374307

Not really a phrase even used inside the NL belg, by any dutch, wherever they or their parents came from...

Edit: Actually, that's not true, in a province in the north that's how they refer to people in the province North Holland (where Amsterdam is too), where the cheese is actually made...

 

[stardustsailor]

Yeah right ...
http://www.theguardian.com/news/datablog/2011/dec/08/europe-working-hours

http://www.bbc.com/news/magazine-17155304

You are sleeping standin' up and still you pay a suite for that ,dude ..
Keep on making a fool out of yourself ...

Greeks amongst the least productive ???
Yes,when we have left with nothing to produce ,anymore ...
You see ,everything -from an apple to a plane -these days is being produced-made in North ,
by southern EU workers ,though ..
The Mob-Mafia -Organised Crime -gang people/members,
actually have lots more of decency than you have ,dirtbags ...
You've enslaved us and you dare to call us names ?
Do not worry ..

We do not worry ...
History loves repeating itself ...

 

[AquariusPanta]

Yeah right ...
http://www.theguardian.com/news/datablog/2011/dec/08/europe-working-hours

http://www.bbc.com/news/magazine-17155304

You are sleeping standin' up and still you pay a suite for that ,dude ..
Keep on making a fool out of yourself ...

Greeks least productive ...
Yes,when we have left with nothing to product ...
You see ,everything -fron an apple to a plane -these days is being producted in North ,
by southern workers ,though ..
The Mob-Mafia -Organised Crime -gang people/members,
actually have lots more of decency than you have ,dirtbags ...

First time I've ever seen (and remembered) Sailor using the word dirtbags in a sentence.

@stardustsailor .. what do you mean by Machiavelli rules?

 

[stardustsailor]

First time I've ever seen (and remembered) Sailor using the word dirtbags in a sentence.

@stardustsailor .. what do you mean by Machiavelli rules?

"Machiavellianism" is a widely used negative term to characterize unscrupulous politicians of the sort Machiavelli described in The Prince. The book itself gained enormous notoriety and wide readership because the author seemed to be endorsing behavior often deemed as evil and immoral. Because of this, the term "Machiavellian" is often associated with deceit, deviousness, ambition, and brutality.

http://en.wikipedia.org/wiki/Niccolò_Machiavelli

The reason that the -clever enough - UK people never joined the " EURO " scam.

 

[Sativied]

Yeah right ...
http://www.theguardian.com/news/datablog/2011/dec/08/europe-working-hours

http://www.bbc.com/news/magazine-17155304

You are sleeping standin' up and still you pay a suite for that ,dude ..
Keep on making a fool out of yourself ...

If you'd actually work a little harder, you could work a few hours less too.

You really don't understand the meaning of "efficiency" very well do you... If anything it shows how lazy you are on the job. There's a difference between showing up and actually achieving something.

Bad Luck Brian meme material "Works the most hours, is one of the least productive"

You obviously have no clue what goes on in Europe and why you all still got food on the table... I don't need to post links. Man, you talk like you are in russia and only watch state television.

 

[PSUAGRO.]

The euro is almost even with the dollar now......shocking

Now is the time to travel