DIY:how to check if you have light leaks to the grow room

lvl i k e y said:

I use the heavy blankets used for moving furnature and appliances. works wonders.

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Also using these in my 4x4 grow closet. I was getting light leaks until I put one of these up. Today I'm adding a 2nd one to separate the room into veg sd & flower sd.
@greenkrakzak, try www.harborfreight.com if you don't have a local store. That's where I get these, they run 9 bucks.

Update: Tried hanging the blanket to split the room in half and saw all kinds of light leaking from the veg side. Therefore, I'm gonna just forget about separating the closet and flower everything I have in there. I have two which are confirmed females, which I got from an experienced grower, but the rest is from bagseed. I have a feeling I will end up with a bunch of boys/hermies from the bagseed anyway, so I'll just flip the whole room to 12/12 tonight.

Silicon.... easy to apply fast easy crack filler =D

BIG sheets of cardboard.
Get mine from a lawnmower shop and/or a window shop (free). Bigger than the inside of a pickup bed and generaly 3 ply thickness.
Can of spray adhesive and a space blanket. You can make the inside reflective before installing. Aluminum duct tape (Home depot) on the seams and you're good to go.
Make a 4 X 6 X 6 tent for like cheap.

lowerarchy said:

Hah, that's way better than just standing around in the dark for fifteen or twenty minutes like I always do.

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Sorry I laughed REALLY hard when I read this....... I too also like to sit in the dark.....pondering thoughts........about......how im in the dark. HAHAHA

Light leaks?

Duct tape is your friend..

As someone else mentioned... you don't need to go 'in' to test for leaks..


Turn off all source of lights on the Outside with the inside lights on.. then start using duct tape.. it makes great seals around doors, hinges, handles.. they even make it in 'colors' so if you have a white wall, you can get white duct tape..

greenkrakzak said:

any cheap solutions for light leaks in a closet (on the inside) ive got black garbage bags up but that isnt completely cutting it, any ideas?

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put up some mylar...