green light spectrum?

R

ricardezra

Member
Brick Top said:
What are you actually asking? Are you seeing visible growth during hours that normally are dark and claiming it is due to using a blacklight during those hours or are you saying something else and asking if that is not the cause or what?
Click to expand...
yes has anyone else done this besides me and of so that changes evrything people say about mh and hps.if blacklights work when you use them when the lights are off yuo dont need mh at all use hps the whole grow and use blue lights when the lights are off for the blue spectrum
 
Alarm Clock

Alarm Clock

Well-Known Member
Lack of red spectrum light does not induce flowering. An extended dark (or darker, which I suspect is your case) period does.

My point, I veg under only blue light. Sometimes I'll have a 5000K and 6500k spectrum in there, but currently I only have 6500K. They receive no red light. Why aren't they flowering? ...Because I only allow them six hours of darkness at a time.

Just look at it this way (probably not the way it really works, but maybe, and it might make it easier to understand the process). It's just the way I've always understood it, and the fictional reasoning I've come up with and used over the years. Works for me:

There's a certain hormone or chemical that a plant will make to cause it to hit puberty or sexual maturity. It doesn't get this in veg (or at least enough of it), because of the light cycle. I've always just pretended that it takes a full, uninterrupted, twelve hours of lack of light for the plant to be able to make this (excepting Rudy's) because of the DNA that tells it to produce it. When the plant feels it's photosynthetic activity stop or slow to an intermittent crawl for a good twelve hours a genetic trigger is pulled and the libido hormone starts to flow around inside the plant and hang out in the nodes. It's like the first time you found a Penthouse under your parent's bed (remember the excitement and awe? this is comparable to the stretch, lol). It's says, "Okay, I'm ready and I want to fuck now," and it focuses on nothing but sex the rest of it's life, just like all of us.

Now, if you have a couple of weak CFL's, with filtering glass (what makes the black), I can see it being nowhere as intense as your main flowering light, especially since your plants are still looking pretty (even with what many would suspect of being major light poisoning). Drastically lowering the intensity of the light they are receiving would, in my theory, drastically lower the level of energy being produced via photosynthesis. After all, there has always been a moon as I far as I know, and outdoor plants never receive total darkness. It even reflects some red spectrum light, but moonbeams only carry a tiny fraction of the energy from the sun, and thus causes only a negligible amount of photosynthesis, if any.

Also, I've never really been 100% sure if the plant would see a light leak (in the case of a beam type leak) and only the actual cells getting hit with the light would be affected or if it the "trauma" would spread out cumulatively over the whole plant. It could have different effects, and I've seen any proper proof either way.

I understand what you were getting at about certain spectrum that might not get picked up by the plant. It'd be used like a red light in a photography darkroom, and would be pretty convenient. However, I disagree that plants flower because of a lack of red spectrum.

Thank you for experimenting and sharing your results with us. May your generosity promptly turn back on you.
 
R

ricardezra

Member
Alarm Clock said:
Lack of red spectrum light does not induce flowering. An extended dark (or darker, which I suspect is your case) period does.

My point, I veg under only blue light. Sometimes I'll have a 5000K and 6500k spectrum in there, but currently I only have 6500K. They receive no red light. Why aren't they flowering? ...Because I only allow them six hours of darkness at a time.

Just look at it this way (probably not the way it really works, but maybe, and it might make it easier to understand the process). It's just the way I've always understood it, and the fictional reasoning I've come up with and used over the years. Works for me:

There's a certain hormone or chemical that a plant will make to cause it to hit puberty or sexual maturity. It doesn't get this in veg (or at least enough of it), because of the light cycle. I've always just pretended that it takes a full, uninterrupted, twelve hours of lack of light for the plant to be able to make this (excepting Rudy's) because of the DNA that tells it to produce it. When the plant feels it's photosynthetic activity stop or slow to an intermittent crawl for a good twelve hours a genetic trigger is pulled and the libido hormone starts to flow around inside the plant and hang out in the nodes. It's like the first time you found a Penthouse under your parent's bed (remember the excitement and awe? this is comparable to the stretch, lol). It's says, "Okay, I'm ready and I want to fuck now," and it focuses on nothing but sex the rest of it's life, just like all of us.

Now, if you have a couple of weak CFL's, with filtering glass (what makes the black), I can see it being nowhere as intense as your main flowering light, especially since your plants are still looking pretty (even with what many would suspect of being major light poisoning). Drastically lowering the intensity of the light they are receiving would, in my theory, drastically lower the level of energy being produced via photosynthesis. After all, there has always been a moon as I far as I know, and outdoor plants never receive total darkness. It even reflects some red spectrum light, but moonbeams only carry a tiny fraction of the energy from the sun, and thus causes only a negligible amount of photosynthesis, if any.

Also, I've never really been 100% sure if the plant would see a light leak (in the case of a beam type leak) and only the actual cells getting hit with the light would be affected or if it the "trauma" would spread out cumulatively over the whole plant. It could have different effects, and I've seen any proper proof either way.

I understand what you were getting at about certain spectrum that might not get picked up by the plant. It'd be used like a red light in a photography darkroom, and would be pretty convenient. However, I disagree that plants flower because of a lack of red spectrum.

Thank you for experimenting and sharing your results with us. May your generosity promptly turn back on you.
Click to expand...
im not saying your wrong but how does a plant know when to flower?if your right when i veg 16/8 regular light and the 8 i use blacklight when i switch to 12/12 12 regular light and 12 blacklight how come they flower? if you add up the total light i give that is 24 hour of light the whole time i should never get bud if you are right.I never give them total dark. how do they know its dark?a spectrum its missing has to be the culprit not total dark.yes total dark does make it sex but think about what is total dark missing to make it flower? it cant be no light because i give my plants bluelight when its supposed to be dark
 
G

gobbly

Well-Known Member
ricardezra said:
well then why when I use a blacklight when the lights are off the still continue to flower?i use light on my plants 24/24 the entire grow.I use regular light for daytime and at lights off blacklight only so thats24/24 right? i still switch to 12/12 but 12 lights out gets a blacklight heitre is a plant to prove
Click to expand...
if your experience with this one plant is all your basing your statements on, then yeah, preface them by saying it's your one experience with one plant. For all you know it's an autoflower... I also don't think you really understand what makes plants flower...
 
G

gobbly

Well-Known Member
Alarm Clock said:
There's a certain hormone or chemical that a plant will make to cause it to hit puberty or sexual maturity. It doesn't get this in veg (or at least enough of it), because of the light cycle. I've always just pretended that it takes a full, uninterrupted, twelve hours of lack of light for the plant to be able to make this (excepting Rudy's) because of the DNA that tells it to produce it. When the plant feels it's photosynthetic activity stop or slow to an intermittent crawl for a good twelve hours a genetic trigger is pulled and the libido hormone starts to flow around inside the plant and hang out in the nodes. It's like the first time you found a Penthouse under your parent's bed (remember the excitement and awe? this is comparable to the stretch, lol). It's says, "Okay, I'm ready and I want to fuck now," and it focuses on nothing but sex the rest of it's life, just like all of us.
Click to expand...
This is exactly what I was saying. According to Mel Frank and Ed Rosenthal, this is how it works (except Mel writes that the hormone is always being produced and just degrades immediately in light, and that a certain concentration must build up overnight to actually trigger flowering). Those are 2 very distinguished sources, who have done extensive research as well as conducted experiments themselves. This is why I asked you to back your statements up with some sort of source, or at the very least more than just your experience over the past few weeks with a single plant and who knows how many variables.

There are 3 branches of marijaua, most consider them species. Indica, Sativa and Ruderalis (spelling?). The third requires much less of the hormone to have built up to induce flowering, so can flower with incredibly minimal amounts of dark times. Those are called autoflower strains, and you can get them from most seed banks. Not saying that is responsible for your observations, but it seems most likely that you have an autoflower. Also consider the moon, it's out all night and doesn't effect flowering, so you'd need a source of light brighter than the moon at night to cause problems.

Edit: plants are green because they are reflecting green spectrum back at you, so the right green's won't effect the plants at all. I've never heard of any other visible spectrum for which this was the case though.
 
R

ricardezra

Member
gobbly said:
if your experience with this one plant is all your basing your statements on, then yeah, preface them by saying it's your one experience with one plant. For all you know it's an autoflower... I also don't think you really understand what makes plants flower...
Click to expand...
no first those are white willow regular from attitude second i have done blacklight on 3 grows with much sucess one grow i got 10 out of 10 from regie seed
 
freddiemoney

freddiemoney

Well-Known Member
ricardezra said:
im not saying your wrong but how does a plant know when to flower?if your right when i veg 16/8 regular light and the 8 i use blacklight when i switch to 12/12 12 regular light and 12 blacklight how come they flower? if you add up the total light i give that is 24 hour of light the whole time i should never get bud if you are right.I never give them total dark. how do they know its dark?a spectrum its missing has to be the culprit not total dark.yes total dark does make it sex but think about what is total dark missing to make it flower? it cant be no light because i give my plants bluelight when its supposed to be dark
Click to expand...
A plant will flower when it is not completely dark, it's not a black or white situation here. I'm guessing that your room is still a hell of a lot darker in the night cycle than in the light. What the dark period is missing is enough light to perform its daytime process of photosynthesis. I have plants flowering just fine even though they are exposed to the dull light of a red LED display reflecting towards them. If I used your reasoning I would have to say that red light has no effect on the flower cycle.
If you do some sort of controlled experiment you might be able to prove something one way or the other, but right now all that's being shown is that a plant can flower when exposed to black light during the dark cycle.
 
R

ricardezra

Member
evry one use some logic.how does a plant know that it is dark? when the lights are off you can use greenlight to check your plants is that not light? you can use a blacklight too when the lights are off they still will flower and not be messed up because of light. is that not light too?there is only one color left red.when its dark click your grow lights on a couple off hours and then cut them off and see what happens yeah i know no more bud
 
R

ricardezra

Member
gobbly said:
This is exactly what I was saying. According to Mel Frank and Ed Rosenthal, this is how it works (except Mel writes that the hormone is always being produced and just degrades immediately in light, and that a certain concentration must build up overnight to actually trigger flowering). Those are 2 very distinguished sources, who have done extensive research as well as conducted experiments themselves. This is why I asked you to back your statements up with some sort of source, or at the very least more than just your experience over the past few weeks with a single plant and who knows how many variables.

There are 3 branches of marijaua, most consider them species. Indica, Sativa and Ruderalis (spelling?). The third requires much less of the hormone to have built up to induce flowering, so can flower with incredibly minimal amounts of dark times. Those are called autoflower strains, and you can get them from most seed banks. Not saying that is responsible for your observations, but it seems most likely that you have an autoflower. Also consider the moon, it's out all night and doesn't effect flowering, so you'd need a source of light brighter than the moon at night to cause problems.

Edit: plants are green because they are reflecting green spectrum back at you, so the right green's won't effect the plants at all. I've never heard of any other visible spectrum for which this was the case though.
Click to expand...
noway i only order regular seeds no auto flower no fems either i only trust regular seed
 
R

ricardezra

Member
freddiemoney said:
A plant will flower when it is not completely dark, it's not a black or white situation here. I'm guessing that your room is still a hell of a lot darker in the night cycle than in the light. What the dark period is missing is enough light to perform its daytime process of photosynthesis. I have plants flowering just fine even though they are exposed to the dull light of a red LED display reflecting towards them. If I used your reasoning I would have to say that red light has no effect on the flower cycle.
If you do some sort of controlled experiment you might be able to prove something one way or the other, but right now all that's being shown is that a plant can flower when exposed to black light during the dark cycle.
Click to expand...
I did experiment I got hermies lol
 
freddiemoney

freddiemoney

Well-Known Member
ricardezra said:
evry one use some logic.how does a plant know that it is dark? when the lights are off you can use greenlight to check your plants is that not light? you can use a blacklight too when the lights are off they still will flower and not be messed up because of light. is that not light too?there is only one color left red.when its dark click your grow lights on a couple off hours and then cut them off and see what happens yeah i know no more bud
Click to expand...
You want everyone to use some logic, but I don't even understand the logic behind the point you're trying to make. What does the black light accomplish? Are you trying to raise your yields? Raise the potency? Or are you just trying to break new ground by keeping some form of light going at all times?

You can use a green light in the room because it is not a spectrum of light the plant uses or even recognizes as usable light. That is why they appear green to our eyes, they absorb all the other visible spectrum besides green.

Does your logic suggest I'll be fine if I take my blue spectrum metal halide and throw it in the room for a few hours a night? I think I might have flowering issues, even without all the red.
 
HookdOnChronics

HookdOnChronics

Well-Known Member
ricardezra said:
evry one use some logic.how does a plant know that it is dark? when the lights are off you can use greenlight to check your plants is that not light? you can use a blacklight too when the lights are off they still will flower and not be messed up because of light. is that not light too?there is only one color left red.when its dark click your grow lights on a couple off hours and then cut them off and see what happens yeah i know no more bud
Click to expand...
That's retarted. They hermy. From the 'light leak' and still gro bud. Bud with seeds. Unless you continually do so then they revert back to veg. Or re-veg. The plant is doing nothing in it's dark cycle because it can't use the light from a blacklight.
Here's a test for you to try. If the plant CAN use a blacklight. Why don't you go get about 100w worth of 'blacklight' and try to grow out 1 plant, and get the 1 plant to produce as much as 1 bowl for you to smoke. If you can do it, I will bow to your feet and kiss your toes.

I can't count on all my apendages how many times new growers have asked/though/used a blacklight in hopes of 'danker weed' lol, that's just absurd man. Not trying to be mean. But I've read so many times, but many very good growers, that a blacklight is basically worthless to your grow!..

Look again at your buds... Go ahead, look at em. You want me to show you some buds WITHOUT the use of a blacklight?... lol, I bet you'd rather have them in your closet then what you have now... Just sayin... IMHO you are waisting your time, and everybody else's with the whole blacklight theory... It's been brought up before, many a time. I have read about it, about how it contributed nothing to the grow. In side by side comparisons of the exact same environment/strain/medium/nutrients because I was dumb and thought it may do something to help too!...

I'm a confident believer that a blacklight will do nothing to make your grow better. That's just my humble opinion though. Do whatever you want. But if you feel like seeing some buds WITHOUT blacklight. Click on one of my grows in my sig! :) lol

Here, click on this link (>>> http://www.bing.com/search?FORM=IEFM1&q=growing+marijuana+with+a+blacklight.&src=IE-SearchBox <<<) go to as many post's as you can about growing with a blacklight. And tell me how many people, knowledgable people, say that a blacklight will work. And then go back through and count how many of them say it's completely worthless.....

Good growin bud! (Put that blacklight in your living room for whenever you have a party. It'll be more useful in there) :)

ricardezra said:
look it up
Click to expand...
Maybe YOU otta look it up... :)

(EDIT: Sorry if I sounded like a dick. Wasn't my intention.)
 
R

ricardezra

Member
use some logic if it take light to grow and it take missing light to flower how does it know if it is missing light? it has to be a spectum its missing to make it think its dark.
 
R

ricardezra

Member
HookdOnChronics said:
That's retarted. They hermy. From the 'light leak' and still gro bud. Bud with seeds. Unless you continually do so then they revert back to veg. Or re-veg. The plant is doing nothing in it's dark cycle because it can't use the light from a blacklight.
Here's a test for you to try. If the plant CAN use a blacklight. Why don't you go get about 100w worth of 'blacklight' and try to grow out 1 plant, and get the 1 plant to produce as much as 1 bowl for you to smoke. If you can do it, I will bow to your feet and kiss your toes.

I can't count on all my apendages how many times new growers have asked/though/used a blacklight in hopes of 'danker weed' lol, that's just absurd man. Not trying to be mean. But I've read so many times, but many very good growers, that a blacklight is basically worthless to your grow!..

Look again at your buds... Go ahead, look at em. You want me to show you some buds WITHOUT the use of a blacklight?... lol, I bet you'd rather have them in your closet then what you have now... Just sayin... IMHO you are waisting your time, and everybody else's with the whole blacklight theory... It's been brought up before, many a time. I have read about it, about how it contributed nothing to the grow. In side by side comparisons of the exact same environment/strain/medium/nutrients because I was dumb and thought it may do something to help too!...

I'm a confident believer that a blacklight will do nothing to make your grow better. That's just my humble opinion though. Do whatever you want. But if you feel like seeing some buds WITHOUT blacklight. Click on one of my grows in my sig! :) lol

Here, click on this link (>>> http://www.bing.com/search?FORM=IEFM1&q=growing+marijuana+with+a+blacklight.&src=IE-SearchBox <<<) go to as many post's as you can about growing with a blacklight. And tell me how many people, knowledgable people, say that a blacklight will work. And then go back through and count how many of them say it's completely worthless.....

Good growin bud! (Put that blacklight in your living room for whenever you have a party. It'll be more useful in there) :)


Maybe YOU otta look it up... :)

(EDIT: Sorry if I sounded like a dick. Wasn't my intention.)
Click to expand...
well yeah if you can make a plant photosythesis when the lights are off they would grow faster and bigger in less time we all want that
i dont get hermies either when i use my method
 
R

ricardezra

Member
ricardezra said:
well yeah if you can make a plant photosythesis when the lights are off they would grow faster and bigger in less time we all want that
i dont get hermies either when i use my method
Click to expand...
evryone cant afford high end lights some of us have to get more bang for the buck again if you can make the plants photosynthesis when the lights are off and not hurt the light period whould that not be very helpful?
 
S

Smrt

Active Member
For the record, I dont even buy that green light is ok. But even if it is, I'll let the kids sleep. 12 hrs is plenty of time to do what you need to, when lights go out, leave em the hell alone.
 
G

gobbly

Well-Known Member
ricardezra said:
use some logic if it take light to grow and it take missing light to flower how does it know if it is missing light? it has to be a spectum its missing to make it think its dark.
Click to expand...
I can't help but think you'd be better off if you spent all this time you have put into your black light vs red light research and put it into general horticultural research on photosynthesis and the two forms of chlorophyll, as well as PAR (photosynthetic active radiation). These subjects could fill up a few weeks of your time, and you will come out of it with a great understanding of both how plants use light, and a wealth of information on light and spectrum.

Edit: and to answer this direct question, how do humans know it's dark? Not because we don't see red, or blue, or green, but because we see NO light in the visible spectrum. Plants 'see' a more broad spectrum than we do. In fact, I'm not aware of much out there that has such a severely limited visual spectrum that a single band of light would make the difference between them seeing it as dark or not (much more common to have a single band they can't see, for which the presence of that band still doesn't illuminate their dark, for instance, plants don't see green)
 
R

ricardezra

Member
gobbly said:
I can't help but think you'd be better off if you spent all this time you have put into your black light vs red light research and put it into general horticultural research on photosynthesis and the two forms of chlorophyll, as well as PAR (photosynthetic active radiation). These subjects could fill up a few weeks of your time, and you will come out of it with a great understanding of both how plants use light, and a wealth of information on light and spectrum.

Edit: and to answer this direct question, how do humans know it's dark? Not because we don't see red, or blue, or green, but because we see NO light in the visible spectrum. Plants 'see' a more broad spectrum than we do. In fact, I'm not aware of much out there that has such a severely limited visual spectrum that a single band of light would make the difference between them seeing it as dark or not (much more common to have a single band they can't see, for which the presence of that band still doesn't illuminate their dark, for instance, plants don't see green)
Click to expand...
i did and I found out that plants use blue light for photosynthesis and red for to tell time so i said hmmm keep blue light on them 24 7 it does not hurt them at all in fact with regular seed i see a greater female to male ratio
 
You must log in or register to reply here.
Top