What light recipe is the best plant LED grow light spectrum?

[Kassiopeija]

btw 14 is rather KORAY:

G700 Four Channels Adjustable Spectrum Greenhouses Horticulture LED Grow Light

Description: RX-G700 4 channel Toplighting LED Grow Light, full-cycle top lighting solution for high bay growing environments, Concentrating Light efficiently and More uniform spectral radiation, more efficient comparison with common grow lights. for greenhouse supplemental lighting or indoor...

koraylights.com

 

[Hollatchaboy]

Yeah i know the optimal spectrum, the sun lol

Sun for the win!

 

[Hollatchaboy]

Then why does hps bud look so good?

It does?

 

[Hollatchaboy]

Same here.
Im not here to argue hps vs led as there are still tons of testing being done. Led wins about all catagorys but not by so much that everyone sees it. The spread cannot be beat for obvious reasons.
As far as real world results , i bet 50 bucks that the best growers on this forum use hps. (quality and yeild both) Its not because hps is better , its because the guy behind the wheel is much much more experienced then most led guys. This is something were starting to see fade away .......the best growers are switching to leds but were not all there yet.
Even if the best bud is grown under led. your not going to look at it and say "oh , thats great led weed" ........ the pros are not really seeable in most cases, but they are there.

What are the parameters for being a"best grower"? As far a I'm concerned, if you get a plant thru flower to harvest, your a good grower. What more is there?

 

[getogrow]

What are the parameters for being a"best grower"? As far a I'm concerned, if you get a plant thru flower to harvest, your a good grower. What more is there?

a lot! use your friends as an example and put yours vs the average. (the average being top shelf, not actual average) And have it tested. The best weed growers on this site use hps .....good assumption.

Yes of course hps bud looks good.....can you tell by the naked eye ? of course not.

 

[getogrow]

What are the parameters for being a"best grower"? As far a I'm concerned, if you get a plant thru flower to harvest, your a good grower. What more is there?

i got several plants though the end with great quality well before i had a clue what i was doing. so i sure wouldnt call myself good at that point in my growing.

 

[hillbill]

There are gurus here for sure, RIU is a prime resource for us hobbyists and others. From lighting to hydro to organic and plant problems, lots of help and knowledge right her3.

 

[Hollatchaboy]

a lot! use your friends as an example and put yours vs the average. (the average being top shelf, not actual average) And have it tested. The best weed growers on this site use hps .....good assumption.

Yes of course hps bud looks good.....can you tell by the naked eye ? of course not.

Nah I can't tell the difference, but I feel comparing weed with my buddy's is like comparing apples to oranges. Genetics plays a bigger role than anything as far as quality. If youre talking yield, it depends on the light energy and genetics, if you're talking efficiency, led blows hps away.

 

[Hollatchaboy]

i got several plants though the end with great quality well before i had a clue what i was doing. so i sure wouldnt call myself good at that point in my growing.

why not? If nothing went wrong, what was bad?

 

[Hollatchaboy]

Absolutely! This is the best forum I've found on the subject.

There are gurus here for sure, RIU is a prime resource for us hobbyists and others. From lighting to hydro to organic and plant problems, lots of help and knowledge right her3.

 

[Kassiopeija]

The best weed growers on this site use hps

My impression is that lots of them use HPS + MH in 2:1 ratio together, the increased blue/UV light now can stimulate several photoreceptors, where a HPS's spectrum is practically void in these regions.

 

[getogrow]

My impression is that lots of them use HPS + MH in 2:1 ratio together, the increased blue/UV light now can stimulate several photoreceptors, where a HPS's spectrum is practically void in these regions.

What about the IR ? aint that the biggest part of the "switch" ? I am just assuming and asking the question. My real world test are showing a tad less trichs on leds vs hps and im assuming that the led is lacking IR. Led kills hps in almost all factors except IR, so thats why i assumed that.
I been mixing hps an mh in flower for many moons so , again , im just assuming that adding blue to hps will not work as good as adding IR to LED.

Overall the buds are way bigger then my normal on the leds but the trichs are not as full as they would be under hps only.

why not? If nothing went wrong, what was bad?

Mainly because i would not of been able to tell you how or why i did what i did.....it just worked. At the time i couldnt of told you organic or chem, pgr's, or cancer causing boosts or anything else about it..... i just knew if i used npk then it might work. Then when i decided i liked to do this , then i got serious and all went to shit...then i got lost in the ph game for a couple years. boy was that a waste of life.... but i did learn a lot in the process.
My very first plant was a male and a female that i grew for about a year before i finally got it in a photoperiod that would cause flowering. i had no clue the plants needed a certain amount of light and dark.

 

[SpideyManDan]

you are right, when I wrote that post I was kinda baked and it's been quite imprecise. It's designed more like an "advertisement" (for UVB), and I wanted to SNIPE into many LED manuf. claims of "full spectrum" or "sun-like" but are then missing 2/5 of colors, and that does even not include real heat radiation, as in around ~1500nm or +2500nm. AFAIK only Amare & Valoya...?

Unfortunately I cannot edit that post anymore to formulate it in another way... but I do firmly believe that the extreme response you see -in the UVB region- is because of the UVR-8 receptor because, as you've stated, is the region where he will only work as a light-absorbing chromophore. By its sheer looks of it this is somewhat a strong indicator, and the scientists in the attached .pdfs do actually also voice this opinion. Problem is that this signal transducting pathway has not been figured out yet. So validation is lacking, but the UVR-8 receptor is only known for 10 years and in current research - there are many studies from only recent years.

The plants responses to DNA damage or otherwise cellular-damage from ROS are all non-photomorphogenetic. This is so because these things can have many many reasons - and it wouldn't be helpful if e.g. a PM infestation would trigger an UVB response, like building up of a sun screen layer of pigments. The photomorphogenic responses of UVB - hyponastic shape, steeper petiole angle & stomatal conductance (which has many other influences) are all due to the photoreceptor response IMO. In one of the .pdfs scientists have tested this in order to inquire if a low UVB constant dosage, such one which just doesn't damage DNA anymore once the initial protective layer has been established, could trigger this response - and they confirmed that, although only at low irradiance levels.
This is because photoreceptors are more sensitive to their target radiation as they've been deliberately designed so. Our skin can tolerate UVA after some adaptation, but our eyes...?

It seems like all plants do or did possess the UVR-8 receptor as the conditions a few hundred million years ago were with more UVB, and even UVC. It's peak nearly marks the cross into UVC. Today 290nm is all it gets at sea-level, and not even very long.

I'll upload the studies once I'm at the homedesk.

Can this be converted to a ELI5?

 

[SpideyManDan]

What about the IR ? aint that the biggest part of the "switch" ? I am just assuming and asking the question. My real world test are showing a tad less trichs on leds vs hps and im assuming that the led is lacking IR. Led kills hps in almost all factors except IR, so thats why i assumed that.
I been mixing hps an mh in flower for many moons so , again , im just assuming that adding blue to hps will not work as good as adding IR to LED.

Overall the buds are way bigger then my normal on the leds but the trichs are not as full as they would be under hps only.


Mainly because i would not of been able to tell you how or why i did what i did.....it just worked. At the time i couldnt of told you organic or chem, pgr's, or cancer causing boosts or anything else about it..... i just knew if i used npk then it might work. Then when i decided i liked to do this , then i got serious and all went to shit...then i got lost in the ph game for a couple years. boy was that a waste of life.... but i did learn a lot in the process.
My very first plant was a male and a female that i grew for about a year before i finally got it in a photoperiod that would cause flowering. i had no clue the plants needed a certain amount of light and dark.

Hey I think a lot of us learned that way. My first plant took nearly 6 months and it was quite a learning experience.

Btw I was laughing at the last part.

 

[Hollatchaboy]

What about the IR ? aint that the biggest part of the "switch" ? I am just assuming and asking the question. My real world test are showing a tad less trichs on leds vs hps and im assuming that the led is lacking IR. Led kills hps in almost all factors except IR, so thats why i assumed that.
I been mixing hps an mh in flower for many moons so , again , im just assuming that adding blue to hps will not work as good as adding IR to LED.

Overall the buds are way bigger then my normal on the leds but the trichs are not as full as they would be under hps only.


Mainly because i would not of been able to tell you how or why i did what i did.....it just worked. At the time i couldnt of told you organic or chem, pgr's, or cancer causing boosts or anything else about it..... i just knew if i used npk then it might work. Then when i decided i liked to do this , then i got serious and all went to shit...then i got lost in the ph game for a couple years. boy was that a waste of life.... but i did learn a lot in the process.
My very first plant was a male and a female that i grew for about a year before i finally got it in a photoperiod that would cause flowering. i had no clue the plants needed a certain amount of light and dark.

Lol... point taken. I was just being a smart ass. You seem very knowledgeable, so I give you props!

 

[Kassiopeija]

What about the IR ?

well, do plants show a physiological reaction towards the exposure of a strong 850nm (HPS IR) spike?

And are MH lamps as useful as independant channels? Just think about the UV 'sunscreen' buildup and how one can get used to that? So a stimulation/celldamage follows a time of repair, but Im not seeing this off-phase with HIDs....

 

[getogrow]

Lol... point taken. I was just being a smart ass. You seem very knowledgeable, so I give you props!

i thought so myself till i read the last post by kassi .....i know nothing! We all help each other and i agree that riu is the most info in one place by far.

well, do plants show a physiological reaction towards the exposure of a strong 850nm (HPS IR) spike?

And are MH lamps as useful as independant channels? Just think about the UV 'sunscreen' buildup and how one can get used to that? So a stimulation/celldamage follows a time of repair, but Im not seeing this off-phase with HIDs....

Can someone explain this in 3rd grade english please? i bet there is a gem of info in that mess. gosh , i should of finished school.....

 

[Kassiopeija]

i thought so myself till i read the last post by kassi .....i know nothing! We all help each other and i agree that riu is the most info in one place by far.


Can someone explain this in 3rd grade english please? i bet there is a gem of info in that mess. gosh , i should of finished school.....

bahaha hold a sec to start my desk... just this stupid mobile 1 finger itchy ditchy talk!

 

[Kassiopeija]

Some photoreceptor peaks:




HPS with its IR spike:


So one of the question in charge would be - if that heavy SPD HPS spike @ ~820nm does anything for the plants? And if so, what?

 

[getogrow]

So one of the question in charge would be - if that heavy SPD HPS spike @ ~820nm does anything for the plants? And if so, what?

This is pure opinion: Im not sure that the heavy spike at 820nm is needed but something is missing from the leds and not giving me the amount of trichs im used to with hps so i have to assume its the 820nm thats missing....im not sure at all .....yet.