Ibechillin
Masochist Educator
No luck, ^that about sums up the premade china led fixtures lol.
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Keep my see 1k hps or switch to cmh???
- Thread starter sturgeongeneral
- Start date
No luck, ^that about sums up the premade china led fixtures lol.
Nothing wrong with China if you shop around. In fact I prefer the ethics of foreign LED companies in a lot of cases. I would hate to support an LED company known for stalking or harassing marijuana community members
If you dig the difference ditch the 3K and go 4K. More sticky, more stank! #BlueLight
It was over ten years ago I first remember seeing some growers saying run MH in flower for better quality, resin, flavors at the expense of a little yield and density and the Horti6K bulbs were the ticket.
I could smell and taste the difference right away and I see it all the time still when I smoke the same clones as mine grown out under HPS.
I think we might finally be in the right weed economy that less quantity of superior bud beats biggest yields but even when people switch to the CMH they are reaching for the 3K bulbs based on some graphs and manufacturers spec sheets not for the the bulb that produces the highest quality resin with the strongest terps like the 4K.
So 4K give better quality buds than 3K???
Am reading much lately and sees a bulb of preference for most of growers are
those Phillips Greenpower 315/930 3100K... but also then it looks logical that blue
specter will be favorable same as before people mixed HPS and MH to get better
quality buds out..
our sun is 5778K colour,mine strongest buds i was ever smoke are outdoor growed
and it looks to me logical that 4200K is closer to natural sunlight than 3100K..
there is Gavita plasma that haves really close specter to sun,its 5600K those
300W version.. but i still dont have a money to just aquire it like that,
tough i will love to try her first as supplemental light to Gavita 1000 DE..
Sorry for brainstorming but claim of Chunky was get me thinking on a quality
of lights and what this light does to our plants if we talk final product quality,
am still somehow think our Sun have best specter and plants already evolved
thru millions of years on same colour specter they was get,
so there could be good connection,to have light that is closest
to specter of our sun....
Kind regards people,excuse me for a book,dont know what you think about this theme,is there is some truth..
Am reading much lately and sees a bulb of preference for most of growers are
those Phillips Greenpower 315/930 3100K... but also then it looks logical that blue
specter will be favorable same as before people mixed HPS and MH to get better
quality buds out..
our sun is 5778K colour,mine strongest buds i was ever smoke are outdoor growed
and it looks to me logical that 4200K is closer to natural sunlight than 3100K..
there is Gavita plasma that haves really close specter to sun,its 5600K those
300W version.. but i still dont have a money to just aquire it like that,
tough i will love to try her first as supplemental light to Gavita 1000 DE..
Sorry for brainstorming but claim of Chunky was get me thinking on a quality
of lights and what this light does to our plants if we talk final product quality,
am still somehow think our Sun have best specter and plants already evolved
thru millions of years on same colour specter they was get,
so there could be good connection,to have light that is closest
to specter of our sun....
Kind regards people,excuse me for a book,dont know what you think about this theme,is there is some truth..
Ibechillin
Masochist Educator
CMH PAR meter measurements comparison from Growershouse at 24" height:
(averaged over area, final 5x5 is sum not averaged)
(The first bar surpassing every other CMH is the Philips Mastercolor CDM Elite 315W CMH Agro Lamp T12 - 3100K)
(The dark blue bar 2nd one from the left is the Philips 4200K, slightly less light)
Shown in the graphs both bulbs produce the same amount of usable blue just about, the 4200k actually produces more usable red spectrum. The goal isnt to have more red or blue light specifically, but to have more of both in the chlorophyl a ad b peaks along with intensity.
(averaged over area, final 5x5 is sum not averaged)
(The first bar surpassing every other CMH is the Philips Mastercolor CDM Elite 315W CMH Agro Lamp T12 - 3100K)
(The dark blue bar 2nd one from the left is the Philips 4200K, slightly less light)
Shown in the graphs both bulbs produce the same amount of usable blue just about, the 4200k actually produces more usable red spectrum. The goal isnt to have more red or blue light specifically, but to have more of both in the chlorophyl a ad b peaks along with intensity.
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Ibechillin
Masochist Educator
There are two forms of Chlorophyll, each has absorption peaks in both the red and blue spectrums and both reflect yellow and green giving plants their green color. Chlorophyll A is the primary photosynthetic pigment and most abundant, it has absorption peaks at 430nm blue and 662nm red. Chlorophyll B is an accessory pigment and has absorption peaks at 453nm blue and 642nm red.
Many manufacturers reference the absorption spectrum of chlorophyll A and B (shown next) which peak in the blue and red regions of the visible spectrum as the main reason for providing a purple spectrum.
Many manufacturers reference the absorption spectrum of chlorophyll A and B (shown next) which peak in the blue and red regions of the visible spectrum as the main reason for providing a purple spectrum.
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Couple pics of the 2 ecsd under the cmh 20 days in. Being fed 2x a day in 1 gallons of canna coco.
heatherlonglee
Active member
I've seen that graph from Growers House and I'll have to call shenanigans on those numbers. Just look at the graph between 700-400nm; the numbers look off or manipulated?
Ibechillin I can see you've put some time into copy and pasting; bring less copy and paste from sites trying to sell stuff and you'll have a better base of facts.
Ibechillin I can see you've put some time into copy and pasting; bring less copy and paste from sites trying to sell stuff and you'll have a better base of facts.
Ibechillin
Masochist Educator
Numbers look manipulated? Post up what the spectrum is supposed to look like then...
Interesting the CMH bulb they suggest as the best from the comparison is also the cheapest CMH they offer, making tons of profit there...waiting patiently for counterargument.
Interesting the CMH bulb they suggest as the best from the comparison is also the cheapest CMH they offer, making tons of profit there...waiting patiently for counterargument.
heatherlonglee
Active member
Forget the colors and look at the numbers on the graph; does that 4k bulb look like its has 10% less light in the 400-700nm rage? I doesn't to me and so I'm calling shenanigans and not really appreciating copying and pasting from sales sources. From 520nm-650nm the 4k bulb goes up 5 lines and the 3k bulb goes up 4 lines. Par goes from 400nm-700nm well the graph shoes that 4k is higher in 43% of the PAR range. Now go back and look before 520nm and after 650nm do you see the 3k having 10% more PAR light than the 4k? Now you see shenanigans and why you shouldn't be bringing copy and pasted stuff from sales sources.
Ibechillin
Masochist Educator
Spectrum and intensity are 2 different things.
PAR (Photosynthetically Active Radiation):
PAR is not a measurement of light, but a range of a light that factors in all wavelengths from 400nm (blue) to 700nm (red). The PAR range corresponds with the range of light that’s visible to humans, PAR does not intentionally weight various wavelengths of light differently like lumens do.
PPF (Photosynthetic Photon Flux):
PPF is a measurement of the total number of photons a light source emits per second that are within the PAR range. PPF is measured in micromoles per second (µMol/S). 1 Micromole is equal to 602 quadrillion photons (602,000,000,000,000,000).
PPFD (Photosynthetic Photon Flux Density):
This is the measurement given from PAR meters. PPFD measures the average amount of photons in the PAR range hitting a certain area per second, PPFD is measured in micromoles per meter squared per second μmol/m2/s. Full sun on a clear day at noon is ~2000 PPFD.
Many commercial grow lights provide PPFD values, but omit critical information like the distance at which the PPFD reading was taken. Taking a single measurement of PPFD is also not worth much either – it’s better to have multiple measurements of PPFD in several different places below the light.
PAR (Photosynthetically Active Radiation):
PAR is not a measurement of light, but a range of a light that factors in all wavelengths from 400nm (blue) to 700nm (red). The PAR range corresponds with the range of light that’s visible to humans, PAR does not intentionally weight various wavelengths of light differently like lumens do.
PPF (Photosynthetic Photon Flux):
PPF is a measurement of the total number of photons a light source emits per second that are within the PAR range. PPF is measured in micromoles per second (µMol/S). 1 Micromole is equal to 602 quadrillion photons (602,000,000,000,000,000).
PPFD (Photosynthetic Photon Flux Density):
This is the measurement given from PAR meters. PPFD measures the average amount of photons in the PAR range hitting a certain area per second, PPFD is measured in micromoles per meter squared per second μmol/m2/s. Full sun on a clear day at noon is ~2000 PPFD.
Many commercial grow lights provide PPFD values, but omit critical information like the distance at which the PPFD reading was taken. Taking a single measurement of PPFD is also not worth much either – it’s better to have multiple measurements of PPFD in several different places below the light.
heatherlonglee
Active member
Ibechillin seriously stop copying and pasting you're way beyond your knowledge. If you can't read a graph that you've posted please just quit now!
On the chart that reads 3k spectral reading and chart that reads 4k spectral reading, the left side is intensity. You posted a graph that shows spectrum on horizontal plane and shows intensity on vertical plane. This is a simple graph? Very simplistic to read also, beginner stuff here?
On the chart that reads 3k spectral reading and chart that reads 4k spectral reading, the left side is intensity. You posted a graph that shows spectrum on horizontal plane and shows intensity on vertical plane. This is a simple graph? Very simplistic to read also, beginner stuff here?
Ibechillin
Masochist Educator
heatherlonglee
Active member
The 315w CMH 4k and 3k aren't that different that they can be compared and contrasted to a LPS and HPS. The Hortilux link doesn't apply here. Again just showing off what you don't know. The spectrums are similar and the 4k shows its much closer than 10% less light. I'd say around 4-5% less light from 4k CMH compared to the 3k CMH. We don't know what Growers House pays for bulbs, the price has come down so much on the Phillips bulbs we don't really know what the mark up was. I'm willing to bet it was pretty high mark up. Again stop with copying and pasting from people trying to market or sell products.
Now do some real research that will benefit everyone. Go to Phillips web site and compare the 315w 942/930. Even Phillips own stats say that the bulbs are less than 10% difference in efficiency. lol
After going to the Phillips web page and taking the numbers I could find it says the 3k is 6.08% better than the 4k. I just eyeballed the 4-5%. lol
It was that easy for me.
Now do some real research that will benefit everyone. Go to Phillips web site and compare the 315w 942/930. Even Phillips own stats say that the bulbs are less than 10% difference in efficiency. lol
After going to the Phillips web page and taking the numbers I could find it says the 3k is 6.08% better than the 4k. I just eyeballed the 4-5%. lol
It was that easy for me.
noknees
Member
i have yet to speak with anyone IRL that uses something other than the 4k. they work. quality is there. so are the drawbacks.
Am bet the buds will be smaller but maybe resin content and quality
of stone will raise..
we are still far away from perfect light source.. maybe if they start
to work plasmas that have 1000 W or more we will be closer to
check this in real experiment..
We have always had the perfect light source. What most are lacking is the right to use it.
noknees
Member
if you like quality and can deal with some heat, you're home. try a little GC 315 in 4k in a 3x3 with some organic soil and a plant you know well. i'd be bloody shocked if you were disappointed.
the 4k are also super nice to work under. you can see what you're doing. WEAR GOOD SHADES
We have always had the perfect light source. What most are lacking is the right to use it.
no truer words have ever been spoken....
