King Cobra
Active Member
Totally have a great grow!!
A Very Important Fact About Lighting For Your Plants
- Thread starter King Cobra
- Start date
Totally have a great grow!!
Elliesdaddy
Active Member
Dude you're completely wrong
Samwell Seed Well
Well-Known Member
epic title fail
a single 600 watt bulb will produce more product then 10 cfls anyday . . . . .thats why the adult growers us full spectrum par lighting as in CMH,MH,HPS, plasma induction, cfls only produce a small part of the spectrum plants need. . .. i mean fuck my first grow i got 12 oz off a 400 watt HPS . . .. . . . . . . . .. . . .
and a 600 watt bulb will have 2ft+(from bulb) of canopy penetration for usable light . . . . every 30cm or 12in away from light source of HPS of Mh bulb you will loose half your lumens . . . . for cfls it is like every 4 in . .. .
wow . .. and the OP puts this kind of crap as a FYI for lighting . . .. . .
i wish we had a crew of trolls that went through the NEWBIE sections and corrected some of the back water half assed , bird brain ideas that people regurgitate
P.S this should be moved to the newb section it reeks of mis information
a single 600 watt bulb will produce more product then 10 cfls anyday . . . . .thats why the adult growers us full spectrum par lighting as in CMH,MH,HPS, plasma induction, cfls only produce a small part of the spectrum plants need. . .. i mean fuck my first grow i got 12 oz off a 400 watt HPS . . .. . . . . . . . .. . . .
and a 600 watt bulb will have 2ft+(from bulb) of canopy penetration for usable light . . . . every 30cm or 12in away from light source of HPS of Mh bulb you will loose half your lumens . . . . for cfls it is like every 4 in . .. .
wow . .. and the OP puts this kind of crap as a FYI for lighting . . .. . .
i wish we had a crew of trolls that went through the NEWBIE sections and corrected some of the back water half assed , bird brain ideas that people regurgitate
P.S this should be moved to the newb section it reeks of mis information
Gastanker
Well-Known Member
I think we're about to establish that you can make diamonds with extra lights.
You see first you take a 15w cfl and turn it on first, and then turn on your 600w, and then the 1000w. Now you'll never be able to get the area any brighter than the original 15w cfl so all the extra energy that's trying to radiate into the room from the 600w and 1kW has no where to go and all of it is actually converted directly into matter in the form of diamonds! I hear if you use LEDs you can make sapphires, rubies, and topaz as well.
fuking awsome! ~+rep
kpmarine
Well-Known Member
Only for flowering, too much red for veg.
yes so make sure u have plnty of diffrent coloured see thru plastic for diffrent light spectrums LMAOOnly for flowering, too much red for veg.
maybe get emeralds if u use green spectrum? LOL
kpmarine
Well-Known Member
At last after reading some of the new posts i dont feel like iam alone on this one. I was a bit upset by some of the eariler comments. I see many mixed views on this subject and a very strong sense of knowing from each individual. But iam not going to repeat myself on the matter anymore to the peeps who dont understand or just dont want to understand!! If you dont believe it look it up, and when you look it up and if you still cant understand it, then ask someone to explain it to you, whom you do believe. Then if you still dont want to believe it, you can continue using 12x24 watt cfls to grow your 2-4 plants, when in reality a single 250 watt cfl will do a much better job. Peace, love , and happiness to you all and over grow the world with the beautiful herb. :).[/QUOTE
You have taken a fact, removed it from the moorings of context, and set it adrift in a sea of speculation. You have just said in an exceptionally convoluted way what we already knew. One 1000w has more INTENSITY than 2 500w. However, what you fail to take into account is the inverse square law. It is the magical formula that explains why 2 500w have their place over 1000w sometimes.
This is a breakdown of how the inverse square law works, courtesy of the wikipedia article:
"Light and other electromagnetic radiation
The intensity (or illuminance or irradiance) of light or other linear waves radiating from a point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the energy (in the same time period).
More generally, the irradiance, i.e., the intensity (or power per unit area in the direction of propagation), of a spherical wavefront varies inversely with the square of the distance from the source (assuming there are no losses caused by absorption or scattering).
For example, the intensity of radiation from the Sun is 9126 watts per square meter at the distance of Mercury (0.387 AU); but only 1367 watts per square meter at the distance of Earth (1 AU)an approximate threefold increase in distance results in an approximate ninefold decrease in intensity of radiation.
In photography and theatrical lighting, the inverse-square law is used to determine the "fall off" or the difference in illumination on a subject as it moves closer to or further from the light source. For quick approximations, it is enough to remember that doubling the distance reduces illumination to one quarter;[SUP][4][/SUP] or similarly, to halve the illumination increase the distance by a factor of 1.4 (the square root of 2), and to double illumination, reduce the distance to 0.7 (square root of 1/2). When the illuminant is not a point source, the inverse square rule is often still a useful approximation; when the size of the light source is less than one-fifth of the distance to the subject, the calculation error is less than 1%.[SUP][5][/SUP]
The fractional reduction in electromagnetic fluence (Φfor indirectly ionizing radiation with increasing distance from a point source can be calculated using the inverse-square law. Since emissions from a point source have radial directions, they intercept at a perpendicular incidence. The area of such a shell is
where r is the radial distance from the center. The law is particularly important in diagnostic radiography and radiotherapy treatment planning, though this proportionality does not hold in practical situations unless source dimensions are much smaller than the distance."
As you can see; after a certain point, it becomes more efficient to use more small lights than one larger one. Light is a particle in motion. Much like all other objects in motion, it is not immune to the laws of entropy. As you move farther away from your source of light, it becomes proportionately less intense per the inverse square law. Which makes sense, given the increasing distance and area covered the farther you get from your source of light. So, it stands to reason that spreading your energy so that it is always at it's optimum intensity via multiple bulbs has it's uses in larger areas.
TLDR:Lumens are visible light at the source. As you get farther from your source, you lose energy to environmental factors (energy required to travel, dispersion of photons into the surrounding environment, etc.). Same reason a 1000 lumen flashlight is alot brighter 2 feet away, than it is across the street. I think mostly that the OP has found a tidbit of knowledge, and didn't think through the whole process before drawing a conclusion. Lumens don't change, because they can't. However, lumens are only part of a much larger ball of wax that you are ignoring.
PJ Diaz
Well-Known Member
I haven't even read the rest of the thread yet (but will..). All I can say is, you're a complete dumbass. Prove your "FACT". Or, try to disprove this fact: https://www.rollitup.org/indoor-growing/83128-lumens-lux-adding-all-up.html.
You wanna talk common sense? In my office I have 4" t8 flouroescent strips operated by two switches. Each switch turns on 2 of 4 tubes in each fixture. Perhaps you can tell me why it gets brighter when I turn both switches vs only one, if the bulbs are each only 40watts. according to your theory, it would be just as bright with one 40w tube vs 1000 40 w tubes. Your "common sense" here is simply stupid.
When you add a second light source, one of two things happen, depending on how you interact with the light. If you focus both light sources on the same point at the same distances, the intensity at that point will effectively double. If you alternately aim the 2 light sources at points next to each other, you will instead double the coverage area. It's simple math, nothing tricky here.
BTW, I happen to be a journey level lighting designer and technician.
King Cobra
Active Member
Kpmarine-- has found a new way to grow weed guys, all you have to do is pop into your local walmart and buy a bunch of flashlights and stick them up in your grow room!! Hurray! Good luck with that.
And as for the chump that said this thread should be moved to the newbie section, looking at some of the replys to this thread, i am sure its in the perfect place. If people actually read my first few posts properly, then you would see exactly the point i was making, but people just picked things from random and used it as a way to vent their own personal bullshit.
I have repeated myself over and over in this thread yet people still have not read my posts properly.
Peace! Love, and attention.
Ps. Im off to walmart to get some flashlights and candles to make some diamonds!!
And as for the chump that said this thread should be moved to the newbie section, looking at some of the replys to this thread, i am sure its in the perfect place. If people actually read my first few posts properly, then you would see exactly the point i was making, but people just picked things from random and used it as a way to vent their own personal bullshit.
I have repeated myself over and over in this thread yet people still have not read my posts properly.
Peace! Love, and attention.
Ps. Im off to walmart to get some flashlights and candles to make some diamonds!!
Tmac4302
Well-Known Member
If you would have taken the time to research further, lumens is a poor way to even judge light intensity/penetration. Like several others have stated, lumens measure how bright a light is to the human eye. This is a bunk way of deciding how much light your plant is getting. One of the proper ways is measuring by foot candles and is much more relative to how much light a plant is receiving than lumens. That being said, if we actually discuss foot candles, 2 - 1000w lights will produce more foot candles than 1 - 1000w light. Thus providing your plant with much more light. There also goes more into the lumen debate than just the amount of lumens. What if you have a 10'x10' space to cover with 6 - 9 plants? 1 - 1000w won't give you the spread you need for your plants that the 3 - 600w or 2 - 1000w light will give you. It's not about intensity of the light. It matters about good canopy management and proper light spread/light penetration. THAT will decide what your total yield will be after genetype and phenotype are taken into consideration. I don't mean to sound rude, and I'm glad you are researching on your own. I wish more people would do that, but you should have a few more grows under your belt before you start giving veterans who have been growing for 5+ years advice on what lighting they should use. Hell, I've been growing for 2 years now and I'm still learning every single day. We all are.
King Cobra
Active Member
I totally agree with you my friend! If we can go right back to my first few posts, i was talking about lumens/intensity for cfls. When you get into the hps/mh the intensity even from a 150watt hps will produce some nice buds, depending on the amount of plants your growing! My point was about CFLs really and getting a better grow if all you have is them! But it has become like a game of chinese whispers!!! And been totally taken out of context! Also i am in no position to tell anyone on here how to grow their beautiful herb, as everyone has their own way!! I will say one thing though, and please correct me if iam wrong, which iam sure someone will, if lumens are a poor way to measure light, then why do the manufacturers of the bulbs put it on the box,? You would say well thats just for the human eye!! But surely if we had no idea of what lumen output a bulb was we would all be growing weed with flashlights or even candles. The lumen info is on the box for a reason!!
polyarcturus
Well-Known Member
if the light overlays the other light the intensity will be affected. lumen s may not be stack-able in principle but in reality they are stack-able, just not at the rate of which the lumens would double because the lights doubled. you can do the measurement yourself with paper, how many layers of paper the light goes thru 1inch apart from the light, a 1000w for example and how many sheets a 400w and 600w placed next to each other, they will probably have the same intensity or close the 1 1000w would probably be slightly more intense still, but covers less area. im a firm believer in more lower wattage lights, it provides more area to work with and a more even spread on intensity from the lights.
Tmac4302
Well-Known Member
Really? They put it on the box because it's like the only neutral way to show one light is brighter than the next (ie: 1000w has > lumens than a 600w). It's a reference point for consumers. That doesn't mean you won't get more light penetration with 2 - 1000w lights. THATS what matters. Not lumens. It's just a reference point showing the difference from wattage to wattage. Foot candles is measured by the distance the light is away from the plant + intensity of the light. 2 - 1000w will produce greater intensity of light penetration than 1 - 1000w light will. Not to mention you have a more even spread of light with greater foot candles. I've read the whole thread and I think I understand you fairly well. Solely looking at light amount and penetration, 2 - 1000w will produce better results than 1 - 1000w light. I'm sorry. I've seen it first hand with 2 - 400w lights that I use now compared to what I started with, ie: 1 - 400w light. Lumens might remain the same, but foot candles do not. Lumens aren't what measures plant growth though so I don't see why we would use lumens other than the fact that it rates the different types of light (ie: 600w vs 1000w). Get a light meter and tell me what produces more light for your plant to use, 1 - 1000w or 2 - 1000w. I promise it will be the latter every time.
Edit: This might help you.View attachment 2154960
del66666
Well-Known Member
i think you are wrong about intensity.......many low powerl lights wont penetrate as much as 1 hi power light but they can cover a wider area....... i think
Tmac4302
Well-Known Member
So, out of honest curiosity, would you contend that 1 - 1000w will out penetrate 2 - 600w, del?
King Cobra
Active Member
Well said again Del.
fukin AWSOME!+repif i could but ur putting out too muchFACT mate so i j ust cant keep up pmsl