light proof

W

WaBo

Active Member

Nov 7, 2008

• #1

How does one make the intake and outtake holes of a small grow box light proof? Isn't it true that even if you use a curved pipe out of the box, light will still get out/in?

 

BoganGrower

Active Member

Nov 7, 2008

• #2

90% uv protective black shade cloth. 2 layers

 

O

ObieOnce

Active Member

Nov 7, 2008

• #3

Use some ducting or put in 90* elbow pipe fittings

 

BoganGrower

Active Member

Nov 7, 2008

• #4

Combine both shade cloth and a 90* bend

 

offgridgrower

Well-Known Member

Nov 7, 2008

• #5

see if this helps

https://www.rollitup.org/grow-journals/122142-offgridgrowers-journey-iss-vsog-stadium.html

last post is about light traps