The big LED question...

Yodaweed · Oct 31, 2016

You LED users don't understand one of the most important fundamental laws of physics, the law of the inverse square, and it's the reason LEDs lack intensity and have to be run closer to the canopy , preferably on a scrog.

Yodaweed · Oct 31, 2016

Dankistino said:
OK. I hear that.

But the fact is that LED puts out more PAR. And LED watt for watt will certainly out yield any hid bulb under test conditions.

@Rahz I'm still pulling huge colas from gen 5 v29s

But are you harvesting pounds each run?

HydoDan · Oct 31, 2016

Kingrow1 said:
Par is covered in lumens, it is a measurement of light!

WRONG!

mauricem00 · Oct 31, 2016

Trippyness said:
Hence why we use PPFD or PPF as a distribution and spread measurement..

like lumens PPFD or PPF are biased measurements. one photon at 400nm has 1.75 times the energy as a photon at 700nm so a light that produces a lot of red light is going to have a higher photon count than a light that produces blue light if the radiant energy is the same.tri band LEDs (450,630,660 nm) produce a high PPF rating but are not great for growing plants. spectrum and radiant power are the best way to compare plant lights and the absorption spectrum also needs to be considered

HydoDan · Oct 31, 2016

Kingrow1 said:
1 lumen of pure par is a shit growlight, 10000 lumens with average par will out grow it, par is not the be all and end all and lumens par who gives a turd, yeild is the king to me and most others!

WRONG!

Yodaweed · Oct 31, 2016

mauricem00 said:
like lumens PPFD or PPF are biased measurements. one photon at 400nm has 1.75 times the energy as a photon at 700nm so a light that produces a lot of red light is going to have a higher photon count than a light that produces blue light if the radiant energy is the same.tri band LEDs (450,630,660 nm) produce a high PPF rating but are not great for growing plants. spectrum and radiant power are the best way to compare plant lights and the absorption spectrum also needs to be considered

These are the same bullshit lies that LED makers have been using for years along with "magical spectrum, make less heat ( what a bullshit lie all lights produce pretty much the same heat based on the wattage) , 1000w equivalent."

iHearAll · Oct 31, 2016

yea i think its time for a new light type. LEDs had it's 10+ years lifespan.

Kingrow1 · Oct 31, 2016

Yodaweed said:
I have a nice LED setup 2x area 51 RW150, and 1x home made CXA2590 x 4 with 660 + 680 + 730 diodes (all bridgelux) , still can't compete with my 600w hps cause the coverage sucks and the lack of intensity.

Thankyou...

Yodaweed · Oct 31, 2016

Another thing to realize about LEDs is that the leading LED manufacturer is moving away from COBs and powerful chips, and they are focusing their efforts on light bulbs for your house and small chips, there's no manufacturer that has the skill and desire to make horticultural based chips, these LEDs are high bay street lights, basically they are where HPS started back in the 1980's.

Dankistino · Oct 31, 2016

Yodaweed said:
But are you harvesting pounds each run?

No i have a small grow. I can get three 8oz plants out of my set up max. I have about 600w draw. Dont go by what i grow. I'm a simple gardener for personal use. I switch strains and conduct experiments all the time I'm not a cropper at all.

Ive followed grows on here and seen the gardens of realstyles and greengenes and others. With a properly set up room HID can not come close to the w/w yield of a best quality led. Photosytnesis is driven by energy from light . Led provides more energy. How could it be that something less potent is more effective?

I do agree that in particular setups HID is best option.

mauricem00 · Oct 31, 2016

Yodaweed said:
These are the same bullshit lies that LED makers have been using for years along with "magical spectrum, make less heat ( what a bullshit lie all lights produce pretty much the same heat based on the wattage) , 1000w equivalent."

well if their lights were any good then they would not need to lie so much

. remember when induction lights were the hot new grow lights? now prices on those are falling almost as fast as prices on LEDs.my local hydro stores don't sell leds. they claim the hot new grow lights are LEC/LEPs. these are the lights commercial growers are replacing their HS lights with

Dankistino · Oct 31, 2016

Kingrow1 said:
Thankyou...

Yodaweed said:
Another thing to realize about LEDs is that the leading LED manufacturer is moving away from COBs and powerful chips, and they are focusing their efforts on light bulbs for your house and small chips, there's no manufacturer that has the skill and desire to make horticultural based chips, these LEDs are high bay street lights, basically they are where HPS started back in the 1980's.

Yodaweed · Oct 31, 2016

Dankistino said:
No i have a small grow. I can get three 8oz plants out of my set up max. I have about 600w draw. Dont go by what i grow. I'm a simple gardener for personal use. I switch strains and conduct experiments all the time I'm not a cropper at all.

Ive followed grows on here and seen the gardens of realstyles and greengenes and others. With a properly set up room HID can not come close to the w/w yield of a best quality led. Photosytnesis is driven by energy from light . Led provides more energy. How could it be that something less potent is more effective?

I do agree that in particular setups HID is best option.

Sounds like you are talking about things that are beyond you, I live in a legal state and been in some of the biggest grows in Colorado, I am friends with 2 dispensary owners, this is what their setup looks like

https://www.instagram.com/p/BMA1sfcgDgE/?taken-by=jungleboyz

all DE lights with big time a/c system and lots of individual tables for each strain, growing in a closest isn't the same as growing for pounds, LEDs aren't there yet bud.

mauricem00 · Oct 31, 2016

Yodaweed said:
Another thing to realize about LEDs is that the leading LED manufacturer is moving away from COBs and powerful chips, and they are focusing their efforts on light bulbs for your house and small chips, there's no manufacturer that has the skill and desire to make horticultural based chips, these LEDs are high bay street lights, basically they are where HPS started back in the 1980's.

I have corn cob led lights in my house. they are good replacements for CFLs and getting very cheap on EBAY. I think bridgelux is still working on horticultural lights with their full spectrum LED but I don't know of anyone who's working to develop effiecient violet or UV leds.

Yodaweed · Oct 31, 2016

mauricem00 said:
well if their lights were any good then they would not need to lie so much . remember when induction lights were the hot new grow lights? now prices on those are falling almost as fast as prices on LEDs.my local hydro stores don't sell leds. they claim the hot new grow lights are LEC/LEPs. these are the lights commercial growers are replacing their HS lights with

What ever happened to those indagro lights, weren't they like 2 grand for a 420 watt light with some fancy pontoons? I know they are pretty good for veg and have a lot of UV light but for flowering?

Yodaweed · Oct 31, 2016

mauricem00 said:
I have corn cob led lights in my house. they are good replacements for CFLs and getting very cheap on EBAY. I think bridgelux is still working on horticultural lights with their full spectrum LED but I don't know of anyone who's working to develop effiecient violet or UV leds.

Bridgelux is el cheapo for LEDs, you want cree to be doing the R&D they are the big fish in the LED pond.

Dankistino · Oct 31, 2016

Yodaweed said:
Sounds like you are talking about things that are beyond you, I live in a legal state and been in some of the biggest grows in Colorado, I am friends with 2 dispensary owners, this is what their setup looks like

https://www.instagram.com/p/BMA1sfcgDgE/?taken-by=jungleboyz

all DE lights with big time a/c system and lots of individual tables for each strain, growing in a closest isn't the same as growing for pounds, LEDs aren't there yet bud.

Things beyond me "all lights produce pretty much the same heat based on the wattage)" you're hideously clueless.

This explains why you cant figure out to grow w better quality equipment.

Dankistino · Oct 31, 2016

Yodaweed said:
Bridgelux is el cheapo for LEDs, you want cree to be doing the R&D they are the big fish in the LED pond.

Youre spewing child like assholery.

I have a bridge lux cob thats been bright as fuck for almost three years. it's over 40% efficient. Even those old gen statistics CRUSH THE VERY BEST DE. Fact

theslipperbandit · Oct 31, 2016

HydoDan said:
WRONG!

PAR (photosynthetically activate rediation ) is the for front for measurement of the given output on a surface incorporating other techniques of usable light..fuck ur lumens fuck ur lux* get ur shit as close to the sun as possible (300/400-700nm)

Ppfd (photosynthetically photon flux density ) this pretty much calculates how many photons are carried in the 400/700nm wave band so shit can get very interesting so to sum it op I agree with the post above me...next he'll be on about lux

Yodaweed · Oct 31, 2016

Dankistino said:
Things beyond me "all lights produce pretty much the same heat based on the wattage)" you're hideously clueless.

This explains why you cant figure out to grow w better quality equipment.

Guess you don't understand basic physics and the first law of thermodynamics

http://rapidtables.com/convert/power/Watt_to_BTU.htm

You can directly calculate btu's from any light using that calculator very closely.

The big LED question...

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