Light during flowering

I just built a new grow room and my fresh air intake is in the floor. When the lights are off you can tell a faint "wisp" of light entering the room. Is this critical? How do outdoor plants flowe when out under the stars and moonlight. Those plants are obviously not in total darkness so can I let a little of that same light into my grow room? It's not enough to read by etc but it's not pitch cave black either...

I think its good.... I have a little light that comes in under the crack of the door during the day but its not enough to really disrupt anything. The plants probably dont even know its there.

BikerDude said:

I just built a new grow room and my fresh air intake is in the floor. When the lights are off you can tell a faint "wisp" of light entering the room. Is this critical? How do outdoor plants flowe when out under the stars and moonlight. Those plants are obviously not in total darkness so can I let a little of that same light into my grow room? It's not enough to read by etc but it's not pitch cave black either...

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in the flowering stage it is crucial to not allow any light whatsoever during the dark period, plants will think their still in the veg period, get confused and growth will be stunted and often it will take way longer for them to flower. i dont know how much this 'wisp' of light is but probly block it out just in case, better be safe than sorry, and plants arnt affected by moonlight because its so drastically different to artifical and sunlight
x

If the light is like barely crackin in the door like mine, its not gonna bother the plants. If its actually shining somehow on the plants or luminating the room at all then I would worry at that point< .............put a dark panty hose or something over your vent.

Can be no brighter than a full moon, for 5 minutes or more over many nights to make them go back to veg. I put them in total darkness for 24 hours then straight to a 12/12 cycle, they will show sex faster sometimes and triggers them to flower stage, thats what i do, hope this helps??

"in the flowering stage it is crucial to not allow any light whatsoever during the dark period,"
In fact, any amount of light up to, and including, the "Full Moon Threshold" is perfectly natural and acceptable. No harm, no foul!

" plants will think their still in the veg period, get confused and growth will be stunted and often it will take way longer for them to flower."
Stunting and extra growth time aren't what you need to worry about from exessive light leaks. Turning "Hermie" - now, there's your problem!

" i dont know how much this 'wisp' of light is but probly block it out just in case, better be safe than sorry,"
I agree with you on this one! But I would add, "As best you can", or "Within reason".

"and plants arnt affected by moonlight because its so drastically different to artifical and sunlight."
Moonlight is Sunlight - it's just reflected off the Moon! Plants, like cannabis, use the "Full Moon" as a "Tipping Point". In other words, they accept Full Moonlight as "Normal" - they react to anything "brighter" as being "Interuptive" (causing problems!).

Please disregard the above responce! It is so full of misconceptions that I hardly know where to start. This is an example of someone that thinks they know what they're talking about, but end up just making shit up!

T.H.Cammo said:

"in the flowering stage it is crucial to not allow any light whatsoever during the dark period,"
In fact, any amount of light up to, and including, the "Full Moon Threshold" is perfectly natural and acceptable. No harm, no foul!

" plants will think their still in the veg period, get confused and growth will be stunted and often it will take way longer for them to flower."
Stunting and extra growth time aren't what you need to worry about from exessive light leaks. Turning "Hermie" - now, there's your problem!

" i dont know how much this 'wisp' of light is but probly block it out just in case, better be safe than sorry,"
I agree with you on this one! But I would add, "As best you can", or "Within reason".

"and plants arnt affected by moonlight because its so drastically different to artifical and sunlight."
Moonlight is Sunlight - it's just reflected off the Moon! Plants, like cannabis, use the "Full Moon" as a "Tipping Point". In other words, they accept Full Moonlight as "Normal" - they react to anything "brighter" as being "Interuptive" (causing problems!).

Please disregard the above responce! It is so full of misconceptions that I hardly know where to start. This is an example of someone that thinks they know what they're talking about, but end up just making shit up!

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I shoulda just said this the first time. But it would have taken too much time, Thanks for doing it.. my thoughts exactly.

T.H.Cammo said:

"in the flowering stage it is crucial to not allow any light whatsoever during the dark period,"
In fact, any amount of light up to, and including, the "Full Moon Threshold" is perfectly natural and acceptable. No harm, no foul!

" plants will think their still in the veg period, get confused and growth will be stunted and often it will take way longer for them to flower."
Stunting and extra growth time aren't what you need to worry about from exessive light leaks. Turning "Hermie" - now, there's your problem!

" i dont know how much this 'wisp' of light is but probly block it out just in case, better be safe than sorry,"
I agree with you on this one! But I would add, "As best you can", or "Within reason".

"and plants arnt affected by moonlight because its so drastically different to artifical and sunlight."
Moonlight is Sunlight - it's just reflected off the Moon! Plants, like cannabis, use the "Full Moon" as a "Tipping Point". In other words, they accept Full Moonlight as "Normal" - they react to anything "brighter" as being "Interuptive" (causing problems!).

Please disregard the above responce! It is so full of misconceptions that I hardly know where to start. This is an example of someone that thinks they know what they're talking about, but end up just making shit up!

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x2.

FumarConDios said:

x2.

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Full moon on a clear night is:

0.025083821 lumen/square foot

or .27 Lux

Plants dont even know its there. If you were growing indoors no light would be the safest way to go. Light more than moonlight could confuse plants and make em do funky stuff (hermie).

Thanks for the thoughts...still a tad confusing when you say that full moonlight which is sunlight being reflected is ok and they won't notice it but then if growing indoors to not let in any light. This "wisp" isn't even close to moonlight...you couldn't even really tell where it was coming from. However, I have already assumed "better safe than sorry" but was extremely curious how many growers have already faced this. Thanks...

stonesour said:

Full moon on a clear night is:

0.025083821 lumen/square foot

or .27 Lux

Plants dont even know its there. If you were growing indoors no light would be the safest way to go. Light more than moonlight could confuse plants and make em do funky stuff (hermie).

Click to expand...

So I though of installing a moon into my grow room to mimic the outdoors, but I'm having a hard time find a moon. Do you know anyone that wants to sell a moon? I guess the hard part would be fitting it through the door. Plus it would be heavy and I might have to rent a dolly.

I would guess that the "absolutely NO light at all during flowering" concept came up because people would have plants flowering in rooms with tiny cracks that would allow direct light in. A thin line of bright light would hit the plants, not very much over all, but for the few leaves that did get light it was enough to make them think it was day, confusing the plant.

I imagine a bit of indirect light leaking in is rarely a problem. Also I imagine if youre using feminized seeds, they're more sensitive and more likely to hermie (since feminized seeds are already genetically predisposed to herming - that's how you make them).