Flowering with Cree bulbs
- Thread starter captainmorgan
- Start date
captainmorgan
Well-Known Member
Probably just saving money on the packaging.
Abiqua
Well-Known Member
Almost for sure imho that it is just a packaging change. The older versions of the 9.5w's, were 1U100 not "2".
Abiqua
Well-Known Member
They made a funky "true white" blue bulb that had the lense coated blue to give it a higher CRI, like 93+, but they were expensive too....
captainmorgan
Well-Known Member
You don't want the high CRI,the added spectrum makes things look better to the human eye but won't help plant growth.
subb
Well-Known Member
Thanks guys! I just wanted to make sure I was getting the biggest bang for my buck.. didn't want to buy a bulb with lesser diodes or anything like that. The more translucent ones are at a Home Depot that's closer to me anyway, so that's good 
So basically if they change the light components at all it will have a new serial number?
So basically if they change the light components at all it will have a new serial number?
hyroot
Well-Known Member
i highly disagree, high cri trumps over high par every time.
captainmorgan
Well-Known Member
hyroot
Well-Known Member
You have it backwards. The higher the cri the more even the spectral distribution. That's why hps has 35 cri and cmh has 93 cri. 80 cri has more wasted light than 90 cri. High cri doesn't mean just more added green and yellow. That would lower the cri. Higher cri means all wave lengths are more equal in intensity. ie even spectral distribution
Notice how the 80 cri has more 580 nm than the 93 cri. the 93 cri peaks are broader than the 80 cri.
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captainmorgan
Well-Known Member
Notice how much more the 93 CRI has between 480 and 580.
And anything beats HPS's spectral graph.
And anything beats HPS's spectral graph.
reasonevangelist
Well-Known Member
DAT PURPLE LINE OMG...You have it backwards. The higher the cri the more even the spectral distribution. That's why hps has 35 cri and cmh has 93 cri. 80 cri has more wasted light than 90 cri. High cri doesn't mean just more added green and yellow. That would lower the cri. Higher cri means all wave lengths are more equal in intensity. ie even spectral distribution
Notice how the 80 cri has more 580 nm than the 93 cri. the 93 cri peaks are broader than the 80 cri.
Want.
(yes i have actually seen this before, many times)
hyroot
Well-Known Member
you notice how more even the 93 cri is. it has more between 480 and 550, after 550. the 80 cri has more. its clear the 80 cri has more wasted light.
captainmorgan
Well-Known Member
I don't think the added cost of high CRI LED's is worth it. Another words the added spectrum won't add much vs a high bin 3070 80 CRI,if money is no object you can also add larger heatsinks to add efficiency and buy high efficiency drivers. Not much bang for the buck with that set up tho.
reasonevangelist
Well-Known Member
more blue in the high CRI... better for veg than the others. Maybe worth it so you don't need dedicated veg lamps to avoid the red-heavy stretching? (plus there's more "far red" in the "purple line"...)
subb
Well-Known Member
Hey Captain, I had an idea I wanted to run by you. I've seen people disassemble these Cree bulbs and make their own flat panels out of the innards. I haven't really seen the insides of my bulbs yet, but what do you think of this idea: Say I take the glass domes off all the bulbs and unravel that diode pillar so it's just a flat piece, but keep all the components inside the base still. Not sure if this would work, but thought it might be a good way to get all the diodes on a flat plane. I don't think the metal pillars should touch one another, though. I'm also not sure if I would need to add any additional lenses or anything like that, as far as light dispersal goes. Or if the build will even allow that..
Thoughts?
captainmorgan
Well-Known Member
They would need to be mounted on a heatsink.
subb
Well-Known Member
Ah yeah I was gonna ask about that, too. I suppose if I did this I may as well make my own panel with them, BUT if I were to go that route I would just get some better Cree COBs and build my own. Definitely plan to do that one day down the road!
Thanks captain!
I think I just like making things very complicated for myself.. I will just use the damn bulbs, I am sure they will veg very wonderfully
Thanks captain!
I think I just like making things very complicated for myself.. I will just use the damn bulbs, I am sure they will veg very wonderfully