Are air cooled reflectors light proof?

[Highsenburg831]

I'm in the process of designing a 4x4x6 lumber grow cab
I've grown the last few years in tents and want to customize
I'm spinning my wheels trying to figure out how to light proof the ventilation of my reflector. In my tents I would hang the light and run ducting so it made a few 180* turns. I would like my new setup to be a little cleaner.

 

[mjlifestyle]

I apologize in advance if I misread your problem, maybe I don't really understand what you're trying to do, as this just seems to have a natural solution. I have a grow tent with an enclosed air cooled reflector, with dedicated ducting (so it's separate from the regular air exhaust + carbon filter). I doubt a few 180 turns are the best solution, as that creates a lot of turbulent air within the duct, which reduces the airflow and, in turn, the efficiency of removing hot air and thus defeats the very purpose of an air cooled reflector.

What I have are two 90-ish degrees turns (on each side of the reflector), that just form naturally - one at the duct going in/out the tent and the other one at the duct-reflector joint. That's because my reflector is almost never at the same level as the dedicated air intake and exhaust.

Sorta like this:

=>||== .........................==||=>
..........\\.....................//
...........\\...________...//
.............=/.............\=

When my reflector is level with the intake/exhaust, I just move the turns outside of the tent, but they're always 90-ish degrees, not 180, as two 90* turns are enough to block all light. I tested my tent for light leaks with this universal setup and I can't see shit in there, I'm poking my eyes with my fingers and still can't see them.

 

[Highsenburg831]

Thanks my. That's what I thought but it's hard to find it explained explicitly anywhere.

 

[MrBungle]

If you are using the home depot flexible duct, it isn't light proof.. it either needs to be wrapped in insulation sleeves, or wrapped in panda..