What is a light trap?

Hey, i just finished my 1st grow box and i am having excessive heat problems...


Although i do have 1x inline and 1x exhaust fan, I was wondering if someone could explain what exactly is a "Light trap"?
Do they work well?
How can i buy or preferably build one?

Thx for any advise.

A light trap is usually something as simple as a 90 degree turn in your exhaust or input ducting to make sure light can't get in or out of your grow space.

don't u have this same thread already?

like he said, exactly. BUT, that is just going to LOWER your airflow, you need to get your temps down b4 u start adding new things. i, and others already told u what i thought u should do, go look @ your other thread.

Yeah, the light can't bend, but airflow can. You make something so the air has to turn a few corners around something flat black so the light can't reflect, thereby letting air in or out while blocking light.

Here's a cross section of one:



There is a post on how to make one, I'll try and find it.

Yeah, I couldn't find it. The guy made it out of black foam board, and basically made a box tube, with walls that alternated top, bottom, and covered 2/3 the open area. The way it was made with the spacers and everything was really ingenious, so I wish I could find it. 2 black plumbing pipe (ABS) elbows work also.

It takes me so long to post, I try and reply but everyone beats me to it. Like was said, though, this is only going to make your heat issues worse.