Can someone explain 80 CRI vs 90 CRI- LED
- Thread starter BullShark
- Start date
Victor6634
Well-Known Member
i believe that the higher the cri the closer it resembles natural sunlight
BullShark
Active Member
These lights would be used for the entire growth cycle.
BullShark
Active Member
was that a haiku?
welight
Well-Known Member
Most standard leds ie 70 CRI are deficient in red noted as R9 in the R1-R15 Colour breakdown,in order to raise R9 the phosphor mix is altered to achieve this higher R9, the penalty is your lose flux/output, its a compromise between more uniform colour R1-R15 and loss of output
Cheers
Mark
Cheers
Mark
PhotonFUD
Well-Known Member
No, it just sounded interesting at the time so I posted it.
PhotonFUD
Well-Known Member
This is a good example of a vendor who knows their products.
Randomblame
Well-Known Member
Rayne
Well-Known Member
1. To photon receptor in the human eye. The higher the Color Rending Index rating is, the better a light source is at making color look more vibrant/intense and the light is not as bright.
2. To plant photon receptors, I am guessing, individual photons are like juicier bites of food.
3. See previous posts:
2. To plant photon receptors, I am guessing, individual photons are like juicier bites of food.
3. See previous posts:
Ya but is the light safe can you link me some safety info I don't want this light to burn my house down or kill my children
Rahz
Well-Known Member
90 CRI isn't worth the par loss. Choose 80. 3000K also works well full cycle.
JorgeGonzales
Well-Known Member
FWIW I am not sure I agree with this. It's certainly an open question.
Rahz
Well-Known Member
In practice I think there is probably little difference. The grow test I know of showed even yields. I have another one in the works. On paper even after giving red an advantage the 90 CRI doesn't come out on top, 3000K 70 CRI does... but that's on paper of course.
After some direct experience and working with the numbers I've started leaning towards 3000K in some flavor. I'm not exactly decided myself but once my test run has finished I think my opinion will be a bit more firm. I have noticed a consistent difference in morphology between 3000/80 and 3500/80. Hopefully those results will be replicated in the test for some show and tell. And that's what it may come down to, not yield but growth characteristics.
Evil-Mobo
Well-Known Member
I'm in for this info. All of it as I picked the 70 CRI based on my thoughts after some research and I just built one light with the 80 CRI 3000K and about to build another with the same COB's. They're both flowering lights but I was curious what they might do with so much red beginning to end. The veg light will be running 5000K 80 CRI.
I would greatly appreciate if you could keep up on this testing because we have paper and real world here so this is of great benefit to us all in my opinion.
Thanks
Rahz
Well-Known Member
Absolutely, there will be a long detailed post eventually with pics from all stages and final numbers. I've invested quite a bit in making it happen and am very curious myself. Everything is tightly controlled down to the amount of water circulation through each container, driver currents equalized, etc. There will be enough clones to choose healthy samples with equal root growth and multiple plants under each light. If the 70 CRI sample performs as it did on paper then I think and hope people should take a look at that and consider whether there is bias in their current choices. If yields deviate from the expected result then things will continue to be ambiguous. Which wouldn't be a bad thing.
I'm almost certain there will be morphological differences but I've only grown under 2 of the 5 samples so that will be interesting to document. I'll look forward to seeing what you come up with as well.
I'm almost certain there will be morphological differences but I've only grown under 2 of the 5 samples so that will be interesting to document. I'll look forward to seeing what you come up with as well.
Evil-Mobo
Well-Known Member
I'm trying to dial in what I feel is a nute issue right now and in the process of switching to dwc for the entire grow but definitely will let you know what I come up with. If you'd like we can share info for your thread. Let me get more "control" on my environments first so I can then make observations, conclusions, etc. But so far the first light has been great and a far upgrade from what was there before in my opinion. Lot less heat too. It's weird that the environment can "read" two degrees less but it can feel 10 degrees plus cooler in there.
PhotonFUD
Well-Known Member
He is selling the components and is an authorized dealer. You can verify directly with the manufacturers.
Now if you aren't qualified to be building electrical devices then you probably should get someone qualified to. A component distributor isn't responsible for your ignorance.