How Dark At Light Out?

DezmondG · Jun 16, 2020

Hey everyone. I have a question. This is my second week into flower and I am growing in a 4x4 Vivosun tent in my basement. I have 2 oscillating fans and a 4” filter pulling out the warm air. At the bottom of the tent, I have both the mesh ports open to allow air in. When lights are off (9:00 pm- 9am) I have the door closed to the basement. To me it’s pretty dark. Am I getting tooo worried about light getting in? Does it have to be sooooooo dark you can’t see your hand in front of your face?

threatco · Jun 17, 2020

Different strains will have widely different tolerances to light leaks. I leave the bottom of mine open and my room gets pretty sunny sometimes. there is even a glowing power cord in there. In six Generations my girls have never noticed.

I would say biggest danger is short brief exposures to a lot of light vs ongoing low-level light leaks

Wee Zard · Jun 17, 2020

Threatco has it right. It's level + time.
Any light level lower than 1 Lux is good all night.
That's the approximate level of a full moon in the tropics.
They can take a few flash photos with no problem too.
It's very bright, but very short. Kinda like lightening in the tropics. :)
Aloha,
Weeze

Beachwalker · Jun 17, 2020

DezmondG said:
Hey everyone. I have a question. This is my second week into flower and I am growing in a 4x4 Vivosun tent in my basement. I have 2 oscillating fans and a 4” filter pulling out the warm air. At the bottom of the tent, I have both the mesh ports open to allow air in. When lights are off (9:00 pm- 9am) I have the door closed to the basement. To me it’s pretty dark. Am I getting tooo worried about light getting in? Does it have to be sooooooo dark you can’t see your hand in front of your face?

Shut the square vents, put a 4 or 5 foot length of silver ducting running out of the round bottom vent hole, as long as it has a 90° bend or two in it it will block the light and still provide a perfect low air Inlet

How Dark At Light Out?

How Dark At Light Out?

DezmondG

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