Fast 20 sec. green light during dark cycle...

I had earlier in this grow couple of times some problems fro shitty timers during dark cycle..and today 2 hours before light went on I thought I heard something falling in grow room ,so I had to take a quick look with pretty powerful green led light...realized later that I should had taped it over to leave only small corner to the flash light to minimize the light expousure.....anyway it might had been under 30 seconds but still....I feel angry why did I had to go and fuck around again,,,any thoughts of how much stress light exposure like that causes...

not much. i do the same. just keep it to a minimum and not very frequent

is it a true green led or a white led with green cover/filter?

Well it is a green led lamp with a strap around my head...it is bought from a grow shop..the facts are that even you have so called "green led lamp"..all the photons are not green anyway..and there might be some more thru green led than others.
So I think many of us screws around with them so called green lights and think that they are safe...what is false, end of the day.
So hand on the Bible ,I promise that IF IT AIN'T ABSOLUTELY NECESSARY ,I WON'T GO AND SCREW AROUND DURING DARK PERIOD EVER AGAIN ! and if any of you see me again on this site talking about been doing that again ,you can spank me in public.

i have seen some that are like a flashlight. they have a white led and then a green piece of plastic to make it green.

point being, if you have to go in the room, i'd do it with a green light vs all other colors

Yep, but I realized you might not need the full power of the led lamp (green led) , mine has like 18 leds on the screen, so next (hopefully newer) I will cover the lamp partially with some sock or something if my light need isn't huge, to minimize the exposure to the plants.....
The few seconds flashing is disturbing enough sometimes...like somebody would do it to us when we sleep...it might interrupt the flowering hormonal produce (for that night) ,causing slowing down in flowering in some degree...

Phytium hater said:

Yep, but I realized you might not need the full power of the led lamp (green led) , mine has like 18 leds on the screen, so next (hopefully newer) I will cover the lamp partially with some sock or something if my light need isn't huge, to minimize the exposure to the plants.....
The few seconds flashing is disturbing enough sometimes...like somebody would do it to us when we sleep...it might interrupt the flowering hormonal produce (for that night) ,causing slowing down in flowering in some degree...

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I have a single Diode Green LED that I wired up just for this. So far no problems. In my earlier days I did not end up with herms from even Green CFL for maybe 2-3 minutes at a time 1-2 times a week. Not a smart idea, but I suppose I lucked out with Strong genetics.

Just my $0.02,

Gavin

The green light idea as "invisible to plants" has been shown false by NASA ( i think).


By now we know that we can grow plants even only with pure green light ...

(..)Transcend takes the input of academia and its customers in crafting products with SPDs for specific applications. “Many companies build horticultural lights with just the blue/far red spectrum because of the hypothesis that these are the only wavelengths used for photosynthesis,” said DeMilo. “Although this hypothesis had some great logic, that chlorophyll A and B absorb these wavelengths more strongly, it turns out that plant growth is far more complicated than this. Some of our customers have grown fantastic plants using 100% green light during testing. This makes sense as plants evolved for billions of years under sunlight. Many recent studies have shown that full-spectrum lighting with properly balanced ratios of wavelengths, say red to far red or red to blue, supports the most efficient plant growth.” (..)

http://www.ledsmagazine.com/article...ed-t5-tube-for-horticulture-applications.html


https://www.rollitup.org/t/thermometers-thermocouples-and-thermal-readings.896353/page-3#post-12279173

Yep, be aware of green light, its a false sense of security...

Kalonji said:

Some of our customers have grown fantastic plants using 100% green light during testing

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further down in your quote...
"some of our customers have also been committed to psychiatric wards during testing"

show me a pic of a plant under 100% green pretty please!

rkymtnman said:

further down in your quote...
"some of our customers have also been committed to psychiatric wards during testing"

show me a pic of a plant under 100% green pretty please!

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Bro you might be talking out your ass. Tbe nasa study mentions green light over and over. Ill dig it up later.

Enough of any type of light photon will grow a plant, ops plants will be fine and of top of my head green light dosent stimulate the large proportion of photoreceptors unlike red and blue light does so id doubt it has much influence on flowering hormones etc but just throwing possible ideas about.

Kalonji said:

Bro you might be talking out your ass. Tbe nasa study mentions green light over and over. Ill dig it up later.

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i was kinda giving you shit. i'm not a botanist but i'd love to see if just green light could grow a mature plant. not just sprout a seed

rkymtnman said:

i was kinda giving you shit. i'm not a botanist but i'd love to see if just green light could grow a mature plant. not just sprout a seed

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Ya...that would be an overstatement. But the nasa studies showed that green light was driving photosynthesis especially intra-canopy. Pretty sure thats right. Ill look it up when i finish working.

Stardust posted a bunch of green light stuff. He is expert level on light/photosynthesis. Its buried in riu led threads.

@rkymtnman

This isn't what I was looking for but it speaks a lil bit to the effects of green light and refutes the notion that plants are "blind" to green light:

http://maximumyield.com/blog/2015/05/01/giving-plants-the-green-light/

Other studies found green light can greatly stimulate the flowering process in plants. Recent results suggest the heading of some plants can be increased by as much as 50% with green-yellow light at 540 nm (Kasajima et al., 2007). A Michigan State University Extension study (Runkle and Wollaeger, 2014) found plants grown with 50% green and 50% red light were about 25% shorter than those grown under only red light, but about 50% taller than plants grown under more than 25% blue light, proving blue light suppressed extension growth more than green light in an enclosed environment. Researchers determined using 25% green light could substitute for the same percentage of blue light without affecting fresh weight, but the electrical efficiency of green LEDs was much lower than blue LEDs.

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IN ANY CASE DUDE EXPOSING HIS LADIES TO 20 SECS OF GREEN LIGHT HAS NOTHING TO BE CONCERNED WITH.
But putting on a green floodlight and working on flowering plants during lights out. nah

Wow .at least this thread got some juices flowing....my other post of asking about AN Overdive best ways to use and results nobody wants to comment...dam

When I need to work in the basement at night I merely flip the lights on LOL

The whole light leak thing is nonsense

I think i have light leaks every week sometimes daily, never did a thing to my bud.

Green light only has affect if the red and blues are utilized at the same time.

RM3 said:

When I need to work in the basement at night I merely flip the lights on LOL

The whole light leak thing is nonsense

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I agree . If I need to do something in grow room during dark period .... I just turn on the lights , do what I need to do , and turn lights back off . I have never had a problem doing this . Just keep it to a minimum .

RM3 said:

When I need to work in the basement at night I merely flip the lights on LOL

The whole light leak thing is nonsense

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^^^^this

The rest is BS used to scare children or to sell green lights.