Safe Light For Entering Dark Grow Room

littlegiant

littlegiant

Well-Known Member
When my grow room lights are off veg or flower,what kind of small light could i have on in my grow room safely without fucking the plants cycle up? Maybe one of those colored 60 florescent screw in party light.
 
Voidling

Voidling

Well-Known Member
They used to say plants didn't do anything with green, but now they're saying plants do use green and adding it to led grow lights. So I'm not sure
 
cowell

cowell

Well-Known Member
Voidling said:
They used to say plants didn't do anything with green, but now they're saying plants do use green and adding it to led grow lights. So I'm not sure
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It wouldn't be green to us then. The reason you see "green" is because that's the part of the spectrum not absorbed - it's reflected.
If they put it LED - then it must be because it's pretty.
It's basic science though.. Why do they add it to LED? beats me. NASA (where all these LED "grow lights" get any credibility) uses red spectrum LEDs.. I figure they'd know what they were doing over someone in China selling $800 light brites.

EDIT: And I have used a 13 watt green CFL party light ($4 at Crappy Tire). It throws enough light to see what you're doing while you are in there.
 
Voidling

Voidling

Well-Known Member
Just because we see it as green does not mean it doesn't absorb some green. Black objects absorb all colors yet still reflect visible light.

Pretty sure NASA used red and blue as those are the main peaks of photosynthesis, but that was just the beginning. It proved that plants could be grown under those 2 narrow bands, they never said they grew equal to full light spectrum plants. There are other studies on how green light effects photosynthesis so it's not just because it's pretty. It's also in the big name led light companies, not the crap from China.

Plus do you think your green bulb is narrow enough on the color band to not put out and yellow or blue light that plants could detect?
 
*BUDS

*BUDS

Well-Known Member
Just wondering why you must go in there at lights off????? Is 12 hours not long enough to tend to them?
 
0calli

0calli

Well-Known Member
some people have to run them at odd times people work etc that why not everybody got a free whole day to do things with no obligations to work family etc everyday like some of us im lucky off work from an injury but when i was working i was lucky to get home and id have mabe 1hr 30min to come in the door not neglect my family see the kids etc shower then eat with the family and then feed the girls tend to them in a rush sucks very easy to miss stuff and fuk up
 
littlegiant

littlegiant

Well-Known Member
My grow room is also my work out room and the lights are off in the day when i want to work out.If i wait till the lights are on then i will be too stoned by that time so green it is...
 
cowell

cowell

Well-Known Member
Voidling said:
Just because we see it as green does not mean it doesn't absorb some green. Black objects absorb all colors yet still reflect visible light.

You are quite wrong about that. They don't absorb green at all.
http://www.thenakedscientists.com/forum/index.php?topic=28138.0;prev_next=prev
http://cronodon.com/BioTech/Plants_FAQ.html
http://www.ehow.com/facts_7530370_color-light-do-plants-absorb.html
http://www.physicsforums.com/showthread.php?t=514772

Should I keep linking? I guess you can google it yourself if you want more.

It's true that black absorbs all wavelengths of light equally, but if no light were reflected from the surface you couldn't see it. Can you imagine a room which was painted all black and you walked in and turned on a flashlight and the light just disappeared because the black "color" absorbed it all? That would be really neat! Of course it doesn't happen. In order to see a black object some light has to be reflected from it. The thing absorbs all the colors equally but it must reflect some light back, albeit less, in order for you to see it. In the case where there is no light, you can't determine if color exists because there's no light to reflect.


Pretty sure NASA used red and blue as those are the main peaks of photosynthesis, but that was just the beginning. It proved that plants could be grown under those 2 narrow bands, they never said they grew equal to full light spectrum plants. There are other studies on how green light effects photosynthesis so it's not just because it's pretty. It's also in the big name led light companies, not the crap from China.

NASA DID use red and blue.. they no longer do.. they are working on 3 different frequencies in the red spectrum right now.. I'll have to look for the article - I read it just like a week ago. They are going red spectrum crazy over there. The link below isn't what I am talking about, but.. you should look at it anyway.
NASA didn't prove plants could be grown under 2 narrow bands, they realized that plants don't utilize green light and only absorbed the red and blue spectrum. The reason they didn't add any other colors because it would be pointless and a waste of energy to generate light that wouldn't be beneficial to the plant in any fashon.
http://www.nasa.gov/centers/marshall/multimedia/photogallery/photos/photogallery/led.html_prt.htm
" Glowing red light emitted by light-emitting diodes or LEDs has been used to grow plants on NASA's Space Shuttle."..

Here's one of the grow light makers talking about NASA... see the one they compare to NASA's - and the one endorsed by NASA (according to them is the original flowerforcer.. which is all red)
http://flowerforcerled.blogspot.com/2008/06/original-flowerforcer-led-grow-light.html

They also have blue spectrum ones "for veg"... still looks like they are making a bunch of different ones.. one half red, half blue, one with a few blue squares.. really art deco. Big name led makers are making crap. They are big name anything since when?

I'm not going to start arguing with you about business practices of companies out to make money. Let's just say LED's are garbage - people that make and sell them do it to gullible people who need the NEWEST thing out there. Once all your target market has one.. how do you sell more? Tell them you made it better somehow.. is it? Show me these "studies" you refer to..I'd love to see them.

Plus do you think your green bulb is narrow enough on the color band to not put out and yellow or blue light that plants could detect?
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Nope. I didn't say anything about that either, but since you brought it up. Why don't you ask me what I think about the light of a full moon? I don't prescribe to the "no light during flowering" crap you read out here. Why? Cause I get stoned and forget to turn shit off sometimes.. It happens all the time. I have had one hermie EVER, and it was genetic - all it's clones hermied too. Green light is best to use when working on the plants at night - because the usable light that makes it to the plant from the bulb isn't going to be strong enough to cause a disturbance to growth any more than a full moon would do.

What other symantics do you want to debate?
 
Illegal Smile

Illegal Smile

Well-Known Member
My grow closet is in a bedroom so we do go in and out during dark time. You can buy green led flashlights from DealExtreme.com.

I am not convinced that just green coloring on a bulb is sufficient. The bulb is producing white light and then you are relying on paint to filter it. The green led is actually producing green light.
 
littlegiant

littlegiant

Well-Known Member
Thanks for all the input on this question folks.All i really need is a light the size of a pencil eraser or smaller so my fat body can make it to my thread mill and weight machine.Ya! just like a fat stoner feeling his way into a burger joint that lost power at night.Simple!!
 
cowell

cowell

Well-Known Member
Voidling said:
http://plantphys.info/plant_physiology/light.shtml

http://m.pcp.oxfordjournals.org/content/50/4/684.full

On my phone and in a hurry so can't dig up more. I agree there is no total dark in nature.

I've seen led lights do well in cannabis, food and flower plants.I don't say they equal hid lights using more power.

They use blue because it triggers more photosynthetic response than other colors. Blue is also what is said to effect stomata opening
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No problem, I gotta run and can't really check them out - but look forward to the read thanks!
 
sk'mo

sk'mo

Active Member
Not too long ago, when changing timers for DST, one of the timers got all fucky and stayed on. I think it was on for a couple of days. Do you know what effect that had on the plants... None at all. Full light through two dark cycles - no problems.

I had been concerned about light leaks before. I have a strain that throws out nanners and thought that light might be the culprit. Turns out it wasn't. Some new genetics under said light didn't herm.

I'm starting to think that the light leak myth comes from old stoners trying to make sure new growers don't score heat by allowing light to escape their grow room.
 
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