Ok everyone, I loved this idea but I needed an inline odor remover, so I modified it some. I haven't used it yet because the room doesn't smell yet, but I'm confident it will work with the right odor remover.
I was going to try a septic tank odor remover but I decided to try ONA first since it came so highly recomended. But feel free to use anything, because of the fan placement nothing will be able to backtrack into your growroom.
Here's a list of parts & approximate costs:
6" Duct, 25 feet long: $28 (you may or may not need this)
In line fan: $30
Extension Cord: $12
Bucket: $2
Lid: $1
Duct Tape: $7
Plastic Epoxy: $8
Odor Eliminator - Depends on what you use.
The first pic is what the unit looks like when done.
The second pic shows the first step. Drill a hole the size of your inline fan (in line fan should be the same size as your duct work). You'll need a drill for this. They make special drill bits to make 4", 6", or 8" holes, but I just used a regular 1/4' bit, but I don't recomend it as it's not easy. Once the hole is drilled put the inline fan in the hole and be sure that the fan is pointed into the bucket and not away from it. Use epoxy made for plastic to set it in place, this will make it sturdy. Then use masking tape to tape both sides of the bucket, make sure their are no air leaks. Next you'll want to wire your fan, just take an extension cord and cut off the end, that's the cheapes way to go. Splice that with the fans wires, use caps, and don't forget to tape it well. Last part of this step is putting the duct work in the bucket to force the air through the odor eliminator. Cut it just a little longer than you need it to be to keep pressure on it so it will stay in the liquid once turned on. Then tape that on as well. This will be the hardest part because your working with tape in a tight area, but take your time with it as it's an important step. Pic 3 shows how it should look.
Note: Some hardware stores have drill presses and can make the cuts for you.
Pic 4 & 5 show the lid. Cut the same size hole that you cut earler into the center of the lid. Use tape to tape both sides and cut the duct as long as you need it to be.
Pic 6 shows a special attatchement that clips into a window piece so I can use a window to vent. If you have a special attatchement like this attatch it last, if not then do whatever you need to do so it can be hooked up where ever you need it to be.
The last pic is of the ONA, I bought both the Gel and the rewetting solution because the liquid in the bottom of the bucket should be at least 2 or 3 inches deep, maybe more. If I need more than that I'll try diluting it with water a little. (also the gel by itself is thick and the thicker the liquid is the deeper it will need to be)
If the one fan isn't strong enough you may need to add a second fan. 2 Fans can be wired together to the same extension cord. But one fan should be plenty for most set ups.
I hope someone out there finds this usefull.