Yeah, first off, you can leave that closet open at night with your new box, just make the new box light tight. You're gonna want to do that to make your ventilation effective anyway, as airtight as possible. Veg tent runs from 11AM to 5AM (18 hours) and my flower cab is going from 5PM to 5AM, so I'm already pretty much on a night schedule for summer, or only minor tweaking of the schedules necessary. The fans I use for intake have solid plastic around the sides, not perforated, and I cut a hole in my plastic and tape the fan in there so it's airtight. I set this all up in the middle of winter, so it was a battle to find small fans, and once summer comes I just need to figure out how to cool my room, seeing as I don't have AC. I have some ideas though...that is very cool man. good deets. i think at first i'm gonna have a very similar setup, a (nearly) passive exhaust (the trueair fan) and a regular desk fan blowing air in. i have a similar situation with my closet as you have with your screened room. if i close the closet door, it gets hotter in there, so i leave it open whilst i'm home but my girlfriend isn't lol (cause she doesn't like the smell). so it's mostly closed during the day and always closed at night for darkness. oscillating fan blows on schedule, true air on all the time.. get's up to the the low 80s in this time of year up in the bay area. i'm sure the box will get hotter, how much hotter is the question!? anyway, i will have lots of questions in the next couple days so stay tuned!! haha, but seriously thanks for the suggestions.
by the way for my summer grow, i'm gonna try switching the day/night cycle to keep temps more balanced....
Maybe as high as ten degrees hotter, maybe more if left unchecked. If your ventilation works well, it'll probably stay around the same temp as the surounding room, maybe 5 or so degrees warmeri'm sure the box will get hotter, how much hotter is the question!?
No cheap PC fans here, I'm using an "Air Circulator" from Target, like 16 bucks. Thing is loud, but blows air like a hurricane. The other fan i'm using is AWESOME, some little personal desk fan that is small, quiet, AND works well! I stole it from a family member and have absolutely no idea where it came from.interesting stuff, i need to read up more on fans. are you using those cheap pc fans? i need to read up on wiring too.
yeah, that's exactly what i was thinking with the true air things initially (half in half out). depending what deals i can find tomorrow driving around town, i'm gonna choose either option (a): 2 trueair filters pulling air through their own carbon filters and pushing air out, or option (b): a 10-inch fan that blows into a carbon filter, but then i'll have to actually make one.... hmm... do you think the trueair replacement filters could work? thanks brosure man, i have my true air sitting right under that defuser box. you could probably just put a carbon filter across the botton so that the exhaust air blows through it. you should be able to rig up the T A like half in the box and half out, should work.