Is this a Vero 29 killer?
- Thread starter JorgeGonzales
- Start date
yes agree really no significant diff. for example I would have expected the x-axis for the blue peaks would have lined up better, since they are all based on the royal blue peak.
OLD MOTHER SATIVA
Well-Known Member
the fact i could buy nichia 130b's cheap in canada with 7.50$ shipping in three days was huge for me..
too bad they didn't have the rest of the stuff..but thanks to people here it all appears to be in transit
too bad they didn't have the rest of the stuff..but thanks to people here it all appears to be in transit
With the permission of the local member, I would like to join a table with a spike effect of different color temperatures and CRI .. where there is already significant in the overall calculation of the spectrum of blue and red .. even though the manufacturer does not confirm the efficacy and spectrum of green and yellow on photosyntentic biochemical process inside the facility .. but for our purposes, this spectrum is less important (contributes roughly 10-20%) .. is the most important activity in blue and red .. Unfortunately there calculated the total share ..ale better than nothing if it does 
Excellent .. I guess That would finally come to an important moment for high CRi? ..I think so
4000k90CRi for growth, 2700k90CRi for bloom and 3500k90CRi for universal?
Excellent .. I guess That would finally come to an important moment for high CRi? ..I think so
4000k90CRi for growth, 2700k90CRi for bloom and 3500k90CRi for universal?
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I would say that according to the graph is quite meaningful value .. .. 4000K has the highest A-PPF due to high share of energy in the blue spectrum, should be more suited to the stage of growth, while the 2700K high share of energy in the red .. suitable for a later stage flower .. 3500k for both? .. However photosynteticke efficiency is achieved 90CRi better than 80CRi .. although it has less energy and luminous efficiency lm / watt .. which for us is not so substantial
90CRi looks worse only in these parameters and on paper, in reality it .. be more effective
JorgeGonzales
Well-Known Member
Where the hell did PPF numbers come from? We have official numbers from Citizen?
JorgeGonzales
Well-Known Member
Also, A-PPF is obviously bullpucky, since 510-610nm definitely does not have "no effect for plant growth".
BOBBY_G
Well-Known Member
Malocan
Well-Known Member
hi,
nevergoodenuf posted the ppf chart allready 2times in other threads, if i remeber right he said he has the numbers from cdiweb
do not be mistaken 510-610nm definitely has effect on photosyntetic and biological processes within plants .. but in a lesser efficiency and importance than in the spectrum of blue and red .. It looks really official now available from Citizen where this material has provided the LED publish Horticular project .. do not know how that project turned out .. all seems such a secret and mysterious about it ..
Yes thank you for Nevergoodenuf .. member in another thread that has provided information
It BOBBY_G: terps Brah = terpenes, terpenoids ..Brah = unknow for me
..sorry i don´t understand slang .. just like JorgeG = Bullpucky 
It is thus on the importance of the use of high CRi or their combination?
Please comment on someone more knowledgeable in this direction ..thx
Yes thank you for Nevergoodenuf .. member in another thread that has provided information
It BOBBY_G: terps Brah = terpenes, terpenoids ..Brah = unknow for me
..sorry i don´t understand slang .. just like JorgeG = Bullpucky It is thus on the importance of the use of high CRi or their combination?
Please comment on someone more knowledgeable in this direction ..thx
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what data is available to substantiate this claim ?
I was based on data from A-PPF .. or I understand it wrong and are thus mistaken .. I like to let repair and make thing right path
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Data from chlorophyll absorption does not measure photosynthesis, and thus can't be used to estimate photosynthetic efficiency. While its true that the light has to be absorbed by chlorophyll to drive photosynthesis its been shown repeatedly that its much more complex, and tests that actually measure the rate of photosynthesis show a different picture. search for bugbee and mcree for more info.
http://biology.mcgill.ca/Phytotron/LightWkshp1994/1.5 Bugbee/Bugbee text.htm
JorgeGonzales
Well-Known Member
OK, as far as 90CRI, I think this is the chart we need to be looking at:
Notice how it says Ra90(on) aka H6K2 models. The other chart doesn't specify, and by the lower PPF numbers, I am guessing that it was Ra90(below) aka H6K2, although this is only speculation.
Oh, the point being the 90CRI PPF numbers are higher.
Notice how it says Ra90(on) aka H6K2 models. The other chart doesn't specify, and by the lower PPF numbers, I am guessing that it was Ra90(below) aka H6K2, although this is only speculation.
Oh, the point being the 90CRI PPF numbers are higher.
BOBBY_G
Well-Known Member
ok his would be a great place to leave the new and improved high-power test data (sorry no vero, we'll be content to slap the crees around though)
@ 1.4A the cree is at 48.44W and 8.30 ppfd/W, a claimed 187 lm/W by PCT at this current
if you want to match the cree efficiency here youd be at about 1.32A = 66W, citizen tool only claims 178 lm/W and is much more conservative than the cree.
citis cost at least 10% less so at the same lpw you are getting (66W/48.44W)/0.9 = 1.35 = 35% more lumens per dollar.
at 2.4A the cree is putting out 7.33 ppfd/W @ 87.6 W at a claimed 159 lm/W by PCT
citi matches this 7.33 efficiency at 2.52A @131W at a claimed 162 lm/W (closer in this case)
here you are getting (131W/87.6W)/0.9 = 1.49 = 49% more lumens per dollar
so moral of the story, in real world testing of citi 5000k vs cree 5000k db, we should expect 35-50% more lumens per dollar in the 160-180 lm/W range. since the chart above is 3500k, lets change that range to 145-165
in the original chart at 145 lm/W the citis appear to offer 70% more lumens per dollar
at 165 lm/W the citis appear to offer 100%+ more lumens per dollar
so yes that first chart is unfair to the crees.... but keep in mind i put the citis and 3590s at equal prices. you can buy citis from cdi for $42 and prob slightly cheaper in qty. $42 is really bare bones bottom of the barrel price for 3590s in qty. we would imagine citis will be a hair cheaper when they become more common. theyre certainly equaling the cree at 35W and below and crushing the cree above 35W (the higher you go, the greater the difference). 35-50% more lumens per dollar at teh same efficiency is nothing at all to sneeze at!
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JorgeGonzales
Well-Known Member
Well, you are the second person to test and show the 1825 ahead at 50W vs CXB3590.
A friendly vendor price would probably be about $35 for the 1825, from what I understand.
A friendly vendor price would probably be about $35 for the 1825, from what I understand.
JorgeGonzales
Well-Known Member
This also hints that perhaps Citizens "typical" values are a little under-reported.