does anyone know the answer to this.

he used a fan from a microwave i think that he took apart. go to his main grow page. in the first couple pages it tells you eveything.

has anyone used one of these for a while until the carbon was spent? what does it spell like? how can you tell when it's time to change the carbon?

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C Code. C code run. Run, code, run... Segmentation fault (core dumped).. aww shit

I have mine running now been on there like a month but, It has been on my 3 season porch and I have to leave the cab door open so the smell of fresh green is in the air. not worried. If you are locked tight in a certain room you would know the diffrence.

Wolfman zen you are the shit! I am planning a steathy grow and this will definately be added to the plans and specs. +rep

I like this thread so im going to give it a
B U M P

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I built this scrubber but there isn't much air flowing through it and the temperature of my grow box has gone from 78 degrees to 87 degrees. . . My box is 3x4x5. I have a fan blowing into the box and then a fan on the inside circulating air and then the scrubber at the top. Any help?

What would be the min fan CFM would be needed for a 6' tall cabinet?

Disregard my fan question. I found a 4" 120VAC muffin fan (120 CFM) at my local surplus house.

Randall,

In your case the scrubber/fan combo is slowing down the air flow and increasing the temps in the process. Either a more powerful fan is in order to draw more air through the filter -or- reconfigure your exhaust fan the way you had it previously and make a stand alone scrubber that intakes and exhaust the air within your grow box placing it as high as possible so as to scrub the smell awy before it's removed by the "now stand alone' reconfigured exhaust fan. Either way should bring down the temps.