Please help with odor control, day 46 of flower and I could smell weed outside my house today

NugHeuser

Well-Known Member
Not sure what I'm doing wrong here. The room is 9.5x9 feet with roughly a 9x4 canopy. 8"inline fan attached to carbon filter in the room, venting into large "crawl space" through a hole in a door. I've got two jars of ona gel that I keep the lid off of, one upstairs and one down, re shake them daily as well as an automatic air freshener upstairs.
The other day I attached some thick plastic to the frame of the grow room door(door stays closed) via velcro and it seals well because the plastic bubbles out pretty hard.
Which brings me to my next point, I have "positive" air pressure in my grow room which I think is part of the problem, but I don't know why because the exhaust is an 8" inline and the intake is 6"(inline fan). Even when I turn the 6" down to low it doesn't change the positive air pressure. I tried shutting it off yesterday(intake) and temps began to rise fairly quick. So I don't know why I can't get negative air pressure going.

The plants are exceeding my expectations for just my 2nd grow, which is good but maybe that's why I can't control the odor? Sometimes theres nothing you can do?? Theres got to be something. With a canopy of that size and odor, will adding more ona gel or air fresheners do much of anything? The carbon filter is by vivosun and has only been running for 1.5 to 2 months. It's a pretty small house, 950 sq/ft upstairs.
Is there anything anyone can think of that could help??

I only have ever been in trouble with the law once, when I was a teen and didn't have a clue what I was doing and grew a bunch of seedy outdoor weed and was raided upon trimming because of the odor around the neighborhood. The odor outside now is nowhere near as strong as it was then thank god(I had a couple 55 gal barrels full of buds, trimming in my bedroom, no cf or anything. Yes i know). But there is 100% a hint of some skunky mj in the air outside right now.

I so appreciate any help!!!!!15156284336491159823093.jpgMy intake, via hole in the wall. Pulling air from the rest of my basement, pretty big area, atleast 2/3 the sq/ft of the upstairs.151562849966395358057.jpgexhaust. The crawl space is a fairly big area too. Maybe double the sq/ft of the room, and I believe wraps around the house and because of half finished drywalling the air recycles back into the main part of the basement.1515628600502663488027.jpg3 oscillating fans if that has anything to do with it. This room is pretty sealed up, no windows in it.
15156286733981525140324.jpg 15156287786791986754637.jpg
Canopy.
1515628940118588148924.jpg
Grow room door. It's not a perfect fit to the frame. Long story. It's an old house and the door frame has a very odd measurement. No stores around me would make me a door to fit it.

Hope I'm not forgetting any important details, head is spinning a bit!
 

Ablaze

Well-Known Member
I don't do odor control, sorry. But I can say that genetics has a lot to do with the smell. Perhaps you'll want to pick a different strain next time. FYI - it's only going to get worse, so I hope others have advice better than mine. oh, and congrats on your second grow!!!
 

NugHeuser

Well-Known Member
Just make a passive intake .
And make that room into a neg airpressure.
That's what I'm saying, I'm having trouble getting neg pressure. I had the fan off for probably a half hour to 45 mins, I don't know how easily the air can move freely through the fan but the next problem I would have for a passive intake is major light leaks. It's a simple cutout through the wall with the opening the specific size to fit an air register on each side for concealment, but then I have light leaking in during dark periods.
I thought about taking the fan off and leaving the ducting but I'm worried then that I won't have enough fresh air being pulled in to keep temps down. 1260 watts of cmh for lighting
 

Lordhooha

Well-Known Member
That's what I'm saying, I'm having trouble getting neg pressure. I had the fan off for probably a half hour to 45 mins, I don't know how easily the air can move freely through the fan but the next problem I would have for a passive intake is major light leaks. It's a simple cutout through the wall with the opening the specific size to fit an air register on each side for concealment, but then I have light leaking in during dark periods.
I thought about taking the fan off and leaving the ducting but I'm worried then that I won't have enough fresh air being pulled in to keep temps down. 1260 watts of cmh for lighting
Are you pushing or pulling air through your carbon filter?
 

Lordhooha

Well-Known Member
You may want to forego the in-line fan and get a squirrel cage style fan. They’ll move a shit ton of air vs an inline. The down fall is sound they’re a lot louder than in lines in most cases.
 

NugHeuser

Well-Known Member
i dont think your exhaust/scrubber combo is enough for an area of that size.

Maybe try doubling up on the scrubber/exhaust? It will help and might even eliminate the positive pressure.
Well it just hit me, I forgot about the 6" cf I have from my first grow, was planning on using that in the drying tent.
But detach the 6" from the ducting and set it up with the carbon filter to add to the exhaust, do you think that would be enough air movement to keep temps down without the active intake?

My active intake acts like a/c because the rest of my basement sits at mid 50s to mid 60s. With the active intake on high I'm usually around 75 degrees @ lights on, ~81 degrees with it on low(although I've never left it on low for a full day because I'd like temps to be below 80 degrees, with it on low they climb)
 

NugHeuser

Well-Known Member
You may want to forego the in-line fan and get a squirrel cage style fan. They’ll move a shit ton of air vs an inline. The down fall is sound they’re a lot louder than in lines in most cases.
I'll look into that. Just search "squirrel cage style fan"?
 

NugHeuser

Well-Known Member
You may want to forego the in-line fan and get a squirrel cage style fan. They’ll move a shit ton of air vs an inline. The down fall is sound they’re a lot louder than in lines in most cases.
For some reason on your original post it says "rat cage" but on the quote it says squirrel cage..
 

NugHeuser

Well-Known Member
Top