ok, testing complete...

first off, i looked up the model fan and found out it is an 88 cfm fan, which is whipping pretty good for a little DC computer fan.

so first i sealed underneath the door leading from the utility room to the kitchen to try and simulate a sealed room. the only openings were the a/c vent and a ceiling (bathroom style) exhaust fan. a/c in the house was not running. i sealed the computer fan in the doggie door and lit up a cigar.

smoke is lighter than air doh !!!!

and the fan did not have enough power to suck the smoke out until the cigar smoke was about 2 feet away.

so then i decided to just try the 50 cfm ceiling exhaust fan. it worked but the smoke had to get within about 1 foot for it to really move the air quickly.

next, i taped up and sealed the computer fan to the opening in the existing exhaust fan. the 88 cfm computer fan was definitely an improvement over the 50 cfm bathroom fan.

so what does all this tell me...

well it tells me that one of these fans would probably be enough to maintain an negative pressure on the room. two would work better, but it might be too much movement. i really just want a minimal negative pressure on the room which would allow the ozone generator(s) to do their job. i really think this style fan(s) would work.

i don't want a big, noisy squirrel fan with a huge cfm rating. i am looking to maintain minimal negative pressure without noise and without sucking the cool air out of the room to fast.

these are definitely going to be tested more when the room is built. it might be that i need two of them positioned in two different spots with a carbon scrubber in front of each one.

the main objective is to exhaust the room of any potential odor in a slow but steady manor...

i feel decent about what i just saw. :thumbsup:

btw, i plan on building a DIY scrubber that Bodom Children Of built here...

http://boards.cannabis.com/grow-faqs...on-filter.html


also, the small ozone generator(s) i plan to use are this one...

http://boards.cannabis.com/indoor-gr...generator.html

and i even considered putting up a timed OZIUM mister...

i believe with all of these options i should be odor free :thumbsup: