Ventilation/Design in my cardboard growbox

[WeedandTittys]

Hey everyone I am new to the forum, and I did rather extensive research before building my growbox, basically by combing through forums and looking for any help online and the aspect I am still the most unsure of is ventilation. My box is not too big-just for one plant- about 40x24x24 (inches)and my light is a 40 watt 5000k CFL. I built a passive intake system(cutting matching holes parallel to each other on two sides) however it seemed like a lot of light was escaping so I built a hood for the holes, just an angle piece of cardboard to redirect the light, the openings are still there. I was concerned about ventilation still so I put a fan in the box, it is just a bit too big for me to put it anywhere but it does fit. I have angled it upward in hopes that with the passive intake and air flow from the fan would be adequate ventilation. Does anyone have any good advice for me? Am I doing anything terribly wrong or will my setup work for the entire lifespan of my plant?

 

[Ms.Fox]

Lighting is not my specialty, but it sounds like you have a good system. Do you have a pic?

 

[WeedandTittys]

here's the interior

And the two passive intake holes

 

[OldSkoool]

See if you can modify some of my light/ventilation plans for your grow box.

Foam Board Light Canopy

The use of foam board was a replacement for the cardboard box I had originally been using, and can see seen in the last few pages of my photos.

- 420 Magazine Photo Gallery

Hope this helps.

 

[WeedandTittys]

You're setup is very impressive. Honestly, I think I'll have to make my next growbox exactly like that. I think the only present modification I can make it the exhaust fan. However, I plan to re-build when I get the money. Thanks for the help.

 

[Propa Gator]

If you can salvage a tiny cooling fan from some discarded electronic thingy, rig it for active ventilation.
You probably already have a power supply: a wall wart whose doo-dah has died.