New style Samsung LM561C Board

see4

Well-Known Member
That's very much incorrect.
http://msue.anr.msu.edu/news/green_light_is_it_important_for_plant_growth

Maybe read a little more, before spreading miss informations. My point in this forum is, I shut my mouth, if I don‘t know something... but that‘s just my attitude!
Afaik means, as far as I know. I was not attempting to spread misinformation, that's why I said, afaik.

upload_2018-1-3_0-16-49.png

The link you provided shows that I'm "partially correct". And that it does reflect green light.
 

CobKits

Well-Known Member
However, I'm looking at the Samsung LM561C datasheets and they all emit the same wavelengths at different ratios, as they are all based on the same light source with different phosphor coatings.
as far as i understand it, in a given CRI the only difference between color temps is thickness of phosphor

different CRIs use different chemistry in the phosphor layer
 

see4

Well-Known Member
By mixing 3000K and 4000K you might find a slightly different ratio of wavelengths for the same output as a single 3500K source, but at face value there does not appear to be that much - if any - difference.
Which is what robin may have concluded as well. I'd simply like to experiment it for myself. My premise is that I will see a benefit in using a mix of 3000k and 4000k that I would not get in using just 3500k.
 

Prawn Connery

Well-Known Member
as far as i understand it, in a given CRI the only difference between color temps is thickness of phosphor
Yes, that's what I was trying to say. Same phosphor, different thickness - so there should be very little difference in mixing diodes of different CCT ratings (3000 + 4000) compared to the average (2x 3500).
 

see4

Well-Known Member
This my friend. Do your experiment then report back a comparison grow. Don't assume the results will be what you think and proclaim it as fact before the time.
I never did state it as fact. I am merely stating my premise.
 

Serva

Well-Known Member
Which is what robin may have concluded as well. I'd simply like to experiment it for myself. My premise is that I will see a benefit in using a mix of 3000k and 4000k that I would not get in using just 3500k.
Do you compare them side by side? Otherwise you can‘t see a difference at all, no?
 

see4

Well-Known Member
Do you compare them side by side? Otherwise you can‘t see a difference at all, no?
That's my plan. One tent with 3000k + 4000k diodes, another with just 3500k diodes, and another with HPS with relatively same watts at the wall.
 

see4

Well-Known Member
Oh... you came here pretty much trying to beat everyone. Your attitude wasn‘t: „hey guys, I like do do an experiment“
Not true at all. At no point in time was I trying to "beat everyone". You are misinterpreting and likely conflating my comments.
 

Serva

Well-Known Member
Afaik means, as far as I know. I was not attempting to spread misinformation, that's why I said, afaik.

View attachment 4067227

The link you provided shows that I'm "partially correct". And that it does reflect green light.
Come one... you could have googled, if my statement was correct, and come back here saying: thanks for the information, I DIDN‘T KNOW that!

Instead you said, green light isn‘t effecting the plant, because it‘s reflected. And the article pointed out that most green light is used, not reflected!
 

Serva

Well-Known Member
Not true at all. At no point in time was I trying to "beat everyone". You are misinterpreting and likely conflating my comments.
Don‘t you realize, that you are „fighting“ with like everyone else here in this thread for the last 3 pages? It‘s all about the attitude, and how we present ourself. Not about the intention behind...
 
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