Any negatives using greenlight in dark/flowering?

[Maxwell Murder]

Does anyone have anything negative to say about using greenlight during the dark period during flowering?

 

[kaljukajakas]

Yes: you'll have a slightly larger electricity bill.

 

[ChaosCatalunya]

Well, I spotted a Spanish grow equipment wholesaler HortiTec [http://www.hortitec.es/] was selling a "Green light torch" so I guess it works ..... meaning it does not interrupt the dark cycle and you are free to bumble around your growroom breaking stuff and trying to electrocute yourself whilst bathed in the pure green light of 2 LED's.

http://www.hortitec.es/index.php/item/item/728.html

 

[Ninjaaa]

Using 500nm LED that emmits spectrum that interferes plants at least...in my oppinion

 

[kaljukajakas]

The flowering response is controlled by the phytochrome system, actually a protein that has two different states called "phytochrome red" and "phytochrome far red". Under normal lighting most of the phytochrome is in the far red state. Once lights are turned off phytochrome far red decays naturally (in a few hours) into phytochrome red, which will tell the plant it's flowering time if the "red" state persist (no red light shining on the plants) for a further 8 or so hours.

The dotted line is phytochrome far red and the solid phytochrome red:



AFAIK photosynthesis pigments (chlorophylls, carotenoids) are not involved in the flowering response.

 

[abuldur]

I have been using one of those for two years with no problems.
They are just a little expensive.About 15$ for 60w hoticol lamp.

Peace

 

[weed whacker]

The flowering response is controlled by the phytochrome system, actually a protein that has two different states called "phytochrome red" and "phytochrome far red". Under normal lighting most of the phytochrome is in the far red state. Once lights are turned off phytochrome far red decays naturally (in a few hours) into phytochrome red, which will tell the plant it's flowering time if the "red" state persist (no red light shining on the plants) for a further 8 or so hours.

The dotted line is phytochrome far red and the solid phytochrome red:



AFAIK photosynthesis pigments (chlorophylls, carotenoids) are not involved in the flowering response.

so does this mean that something like a blue light would work equally well for working during the dark period?

 

[LolaGal]

Why buy a special light? I just put some layers of green Saran wrap around the flashlight! It sticks really well, no tape needed.....

 

[PrimoVG]

The flowering response is controlled by the phytochrome system, actually a protein that has two different states called "phytochrome red" and "phytochrome far red". Under normal lighting most of the phytochrome is in the far red state. Once lights are turned off phytochrome far red decays naturally (in a few hours) into phytochrome red, which will tell the plant it's flowering time if the "red" state persist (no red light shining on the plants) for a further 8 or so hours.

The dotted line is phytochrome far red and the solid phytochrome red:



AFAIK photosynthesis pigments (chlorophylls, carotenoids) are not involved in the flowering response.

Noice!!! but im confused....there has to be a light source of certain potency to interrupt a dark cycle, correct?

so why do we obsess over even the most tiny of light leaks? or are these things not related?

also, staying on topic...i saw some nifty green LED flashlights on eBay (i think) a while back...

 

[kaljukajakas]

so does this mean that something like a blue light would work equally well for working during the dark period?

There are other regulatory systems (especially cryptochromes, IIRC) that respond to blue light and might somehow interfere with flowering and confuse the plant. Stick to green to be safe.

Noice!!! but im confused....there has to be a light source of certain potency to interrupt a dark cycle, correct?

so why do we obsess over even the most tiny of light leaks? or are these things not related?

It takes very little red light to convert a bunch of phytochrome red back to phytochrome far red. Photoreceptor pigments can be very sensitive and connected to signal transduction cascades that amplify the initial response. It's not alike photosynthesis where a lot of light is needed for something to happen.

 

[purpledomgoddes]

re-post from another thread. debated there. intensity/length of illumination by green @ dark possible factors to consider.
blue light:350-500nm
chlorophyll a catalyst
auxin catalyst
cell activity
split of water atom
influence on movement of plant

green/yellow500-650nm
limited to no response. plants reflect green light(debated/discussed issue in other thread) and so seem green to human eye. why green lights can be used @ dark w/out interrupting dark for plants. party lights are effective cheap option.

red light600-700
sugar production catalyst
chlorophyl b production catalyst/engine
seed germ signal
chloroplast adjustments to light
siganl light/dark times
chromosome catalyst/engine
soil composting enzyme catalyst

far red 700-780nm
signal seed dormancy
signals internode stretch

uvb already documented as catalyst for fruit end quality. ~ 300-400nm for uv.
www.icmag.com/ic/showthread.php?t=108993

 

[Pirate]

I use 3 - 60 watt Compact Floros from Home Depot in my garden. They are 5 bucks. (not the shitty 25 watt bulbs, very dim) Use the spiral green glass floros) I stick em in clip on lamp holder and you can Twist and point the head where ya want the light. Never had a problem from using green lights. In fact, I work in my garden under green light far more than regular light. I was out there all day today during the off time doing a ton of changes to the systems. Yup........Green bulbs are the hot ticket.

BE CAREFULL with the larger 75 to 100 watt green landscape flood lights. White light leaks out at the base. ( I found out the hard way)

 

[Greyskull]

you guys are working way way way to hard to see in the dark.
i like working on some things when lights are out (rez changes for instance).
I like headlamps. I just bought 5 of these from this hunter/outdoor's man place w 5 GREEN LEDS.

They clip onto the bill of your hat, and BAM. Wherever you look. there you go - perfect amounts of GREEN light that won't affect your plants negatively.
Oh, when I ordered them they were $3.99.... price has gone up slightly.

http://www.cabelas.com/cabelas/en/t.../search-box.jsp.form23&_dyncharset=ISO-8859-1

Seriously I promise the model with the GREEN LEDS is the poop and is perfect for any grower. Comes with batteries, too....

I am telling you check it out.

good luck

 

[MidLifeCrisis]

Now that Christmas is over and there are tons of sales on leftovers...I bought a strand of green Christmas tree lights and velcroed them to the mylar surrounding my growspace...works like a charm and gives off plenty of light to work in...

 

[junior_grower]

I have a green light also, but I try to do all my work when the lights are on.

 

[Pirate]

Thought I would post my light for ya.

This is the Mother Room)

 

[green_thumb...]

nice,ive been using green suran wrap over my mag light looks alot like that

 

[Pirate]

I didn't know they made Green Saran Wrap.

I like the Christmas lights idea too !!

Geniuses we growers are I tell ya...........Geniuses !!!

 

[LolaGal]

They usually have Green Saran Wrap around Christmas, so your stuff will look all holiday-ish. They make blue, yellow, pink, green, teal green, and clear! May still be some left over from then.

I love the green CFLs! Looks so Oz-like, or should I say Emerald City-like?! I think I'll get one of those!

 

[green_thumb...]

thats awesome lolagal,your funny.