green light for working in grow room at lights off?

[Diesel dreams]

A green light and a green light bulb are not the same thing.

Thank you for stating the obvious Rabbi... Many people don't know that, lets say an led can be essentially programmed to the green spectrum of roughly 520-570 nanometers ... Where as an incandescent bulb emits light from the red and blue spectrum as well. Although those spectrum are coming from the bulb the green painted glass only allows greens to pass and those others are bouncing around not being able to escape. So Rabbi is correct +rep

Rabbit I was wondering If a plant only flowers by lack of red spectrum why doesn't it flower in veg during exposure to blue mh lamp? I have always understood flowering in response to light/seasonal change. Also with that being said I have flowered with a blue mh lamp and got some pretty dank bud worth no stress/hermie problems...

 

[BlueBalls]

Green Light

The visible green light has a wavelength of about 510 nm. Grass, for example, appears green because all of the colors in the visible part of the spectrum are absorbed into the leaves of the grass except green. Green is reflected, therefore grass appears green.

...plants don’t use light in the green spectrum for photosynthesis.

I feel I should bring this to your attention.

 

[joesilver]

Just get a pair of NVGs...

 

[maryjaneismyfre]

Very interesting! It isn't so cut and dry then.. That said, i've seen a small red LED on an aircon unit cause a hermie issue and I have had mates who for about 7 years tended to their girls when the lights are off with a small green energysavers which is on at 'nite' always. I am not to be honest sure of whether they use special bulbs (like photographic etc..). But you can tend to your girls under a strong enough light of the correct bulb type ( Whatever that is), that I AM sure, and have seen it been done. These boys ran various strains, armageddon skunk, exodus cheese, top44, skywalker etc. and it has never caused a problem for them. The lights were small but there were a few and they were bright enough to happily tend to all and eye pests and do close-up management..It is an old trick apparently.

 

[atarijedi]

Buy one of those cheap infrared nightvision toys for like $40.

 

[Rabbi]

Thank you for stating the obvious Rabbi..

Oh today it's obvious but yesterday it's...

I just use a regular green party bulb found every where.

Diesel Knowledge is sharing experience, wisdom is listening. Hang in there kid you just may learn a thing or two yet

 

[Diesel dreams]

Yes sir essentially the same color is coming from the different types of bulbs so yes a painted bulb is different from a green light but they still produce a green.... Non photosynthesis... Light... Not red it is used in photosynthesis by plants ... Led cfl or reg green colored light can be used at lights out... from experience... dropping knowledge... Thank you Rabbi I'll try to stick around, still have allot to learn..

 

[Diesel dreams]

Ok.. I am not afraid of using lights in the flower room during the dark hour.... I just Fear.... ...Fear. I doubt I'm going to change your opinion but I have to admit your right you can go in there with a reg light.... (fine print) "just keep it short and not to often" I believe that you have every right in the world to have a regular bulb in your grow during lights off, just not in my grow... Good luck.

 

[overbudjet]

The green light bulb thing is bullshit and the "don't disturb your ladies" thing is bullshit.

You can go in there with a regular bulb, just try to keep it short and try not to do it too often. Doesn't hurt a damn thing.

"The only thing we have to fear is fear itself"

I always do what i have to do in daylight(Uv filtered google).i got some hermi when i doing some minight inspection(long time ago),so if you want to run light in yours room in dark cycle it's up to you Bro. but not in mine .

Better to be safe than sorry.

 

[dan_1]

I just have a regular string of green x-mas lights along my ceiling... Regular incandescent green bulbs. Never a nanner or stray seed to be found...

 

[bonbon]

Green Light Drives Leaf Photosynthesis More Efficiently than Red Light in Strong White Light: Revisiting the Enigmatic Question of Why Leaves are Green
https://academic.oup.com/pcp/article-lookup/doi/10.1093/pcp/pcp034

Abstract
The literature and our present examinations indicate that the intra-leaf light absorption profile is in most cases steeper than the photosynthetic capacity profile. In strong white light, therefore, the quantum yield of photosynthesis would be lower in the upper chloroplasts, located near the illuminated surface, than that in the lower chloroplasts. Because green light can penetrate further into the leaf than red or blue light, in strong white light, any additional green light absorbed by the lower chloroplasts would increase leaf photosynthesis to a greater extent than would additional red or blue light. Based on the assessment of effects of the additional monochromatic light on leaf photosynthesis, we developed the differential quantum yield method that quantifies efficiency of any monochromatic light in white light. Application of this method to sunflower leaves clearly showed that, in moderate to strong white light, green light drove photosynthesis more effectively than red light. The green leaf should have a considerable volume of chloroplasts to accommodate the inefficient carboxylation enzyme, Rubisco, and deliver appropriate light to all the chloroplasts. By using chlorophylls that absorb green light weakly, modifying mesophyll structure and adjusting the Rubisco/chlorophyll ratio, the leaf appears to satisfy two somewhat conflicting requirements: to increase the absorptance of photosynthetically active radiation, and to drive photosynthesis efficiently in all the chloroplasts. We also discuss some serious problems that are caused by neglecting these intra-leaf profiles when estimating whole leaf electron transport rates and assessing photoinhibition by fluorescence techniques.

 

[Deezl]

Is too much green light possible I wonder.
Me and everyone I know and I'd guess most indoor growers have used a green light like a headlamp, led wand or single bulb to go in and do some work.
What up with hanging like a dozen led wands on the wall and leds in the light sockets and just fully light the room so no shadows, no headlamps needed?
I'd like to work like that.
I guess the big companies will do the definitive studies and incorporate the results.
I'm picturing Marlboro's weed factory just switching from white to green lights automatically and everyone just keeping working 24/7.

 

[Phaeton]

Wal Mart has 4.5 watt green LED bulbs for under five bucks. I have three of them hanging under one of the ceiling fans. No worries about getting caught in the dark, those suckers are bright.

I put up a bank of six green 54 watt T5's alongside the end of a row of plants, just to see if putting on more green would help. 325 watts should have been enough to make a difference at 8" away.
The overhead feed lights already have some green, the 'white' diodes one brand mixes in are about half green, another brand uses 525 nm green diodes mixed in.
Long story short, the extra 324 watts of green made no growth difference to the plants receiving it over the ones that did not.

http://plantphys.info/plant_physiology/photoperiodism.shtml

About halfway down is a chart showing the time needed for various wavelengths (colors) to interrupt the budding cycle.
A lot of other cool information as well, but the time difference for orange red versus deep red versus green or blue to cause problems is more to the point of this thread.

 

[Deezl]

Thanks, interesting article.
As a side note: My friend left a green pigtail florescent party bulb on in a flowering room for the last 3 days but I don't figure that'll be a problem.

 

[jocat]

Iv'e been growing a while & I think the dark...TOTAL is the best way to go, I have some genetic's that are stable, like 4 weeks in flower indoor moved outdoor to 16 hr days finished flowering perfectly stable, & some that will toss a nanna if you flick a bic in there...so as you pic your strains it's another consideration....genetic stability...bitch toss them nanas she gets tossed 2.

 

[Floridian]

Diesel dreams maybe I misunderstood your point on page three but a plant doesn't flower in response to any color temperature or lack of red/blue color,it responds to the amount of dark hours it receives.Sorry if I'm stating the obvious to you bro I'm sure you know that but your response to rabbi on top of page 3 had me wondering.Of course a plant will flower under a MH HPS or any temp. in between if its receiving at least 12 hours darkness every 24 hour period.Sorry if I misunderstood

 

[eric2028]

I've used green party bulbs for years. Only problem I ve had is one brand was too bright and too close to my co2 controller. It made my co2 burner fire up while main lights were off. Went back to the cheapies and no worries.