Light leaking into grow room/light blocking

Indoor Growing
1

How do you avoid or block light from leaking into your grow room area during flowering ?

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2

Hola God

I had a similar problem I did not want
a solid door to my flo room but did not
want any leak either.

So I put a green curtain in the outside
and a white one inside.

Plant don’t see green light so if you
put a green tissue where the leak is they
won’t see the light

I never got any problem with my
tissue door

Bare

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3

Awesome @Barefrog you took the words right out of my mouth (well fingertips) :+1:@shroomgod ya bro you could even have a green light inside the flower room you could turn on and off if you needed to do anything in there while it’s “lights out”

4

Plants do see green light and the green light causes hormones to be produced. A plant produces green light as the light is passes through the leaf. This green light tells the plant that it’s below the canopy and needs to stretch. What weak green light doesn’t do is interrupt the dark cycle.

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5

Hola Viva

You keep enriching me

Thanks

Bare

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6

https://www.maximumyield.com/giving-plants-the-green-light/2/1324

Some facts about green light.

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7

i have a related issue myself -outdoors- because i’m in ghettoburbia.
there are various outdoor lights, motion(wind/cat)-sensing flood lights, a grocery over 500’ away with a horizontally aimed LED parking-lot light(:gun: so tempted, but i’m not sure if .177 lead vs LED panel would do it), enough “light pollution” so that an over-cast/cloudy night is lighted than a full-moon.

the big wake-up call was last december when my green-house plants began vegetating at week 4 of flower and f’ed that up good.

so i was pulling plastic over my greenhouse january-april, “light-depping” and got a nice spring harvest, but cursing the extra work & scheduling.

:boom: so what color tarp will make the best curtain? dual?(i.e. silver/brown)

i ask anyone who knows because i need to prevent light pretty soon here because i’ve got various stages of veg through naturally pre-flowering. :sweat:

and i’m baked again & can’t remember the rest :smile:

edit (i need curtains/drapes, not a full cover, fwiw)
:evergreen_tree:

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