The Best Diy Ez Walmart Carbon Filter for Micro Grows Zen Style

sirsmoksalot said:
I was looking around at work last night and found a beautiful can (4"round x 10" long) all ready with screen like caps on the ends. I snaked 2 of them. LOL :-) I put 2 pieces of cut to fit filter screen on the bottom and filled with carbon, another 4" circle of screen, more carbon, etc... untill the can was filled. I used 2lbs of carbon to fill it. My question is will a 90 CFM booster fan be able to pull enough air through the can where it has a 4" opening on each end but nothing on the sides? will I have to drill/machine holes/slots in the can? I would assume I would use more of my carbon with out the holes/slots as air will have to travrel the entire 10" length of the can. Sorry if I confused anyone I'm typing fast before I head out to work.
Click to expand...

Can anyone answer this for me?
 
I didn't understand until I reread your post. Can't answer definitively, but I think you might run into issues trying to push air all the way through 10" of carbon. 90CFM doesn't seem like it would do it. Plus, it seems a bit inefficient, you would lose a lot of airflow if it does work. You need either something of smaller diameter to put inside (and a lot of drilled holes) to make something like the filter from this post, or two 4" diameter pieces of screen so that you can have something like || || . The air would go through the first screen of the can, through carbon, through one of the screens you make, through empty space, through the second screen you make, through carbon again, then the final screen. I hope that makes sense. You would have carbon on both ends with empty space in the middle and the air would filter twice.

Only way to know for sure though, is to try it your way first. Some fans have better resistance against back pressure than others.
 
love this DIY, built 2 of them and love them. I am using them on my vegging cabinet just to catch any stray smells. Only mod I did was to drill a whole through the end of both cans once it was assembled and but a bolt with a wing nut on it just to hold the two cans together.
 
But my wife is also confirmed in cup sizes,,,,, ba dump dump,,,,(rim shot) sorry,, just had to ring in,,, and now back to your regularly scheduled thread......:peace:
Mr. Gone said:
One of my favorite DIY's. If anyone's still interested, I had to make another one of these and was SOL at Walmart, but can confirm that OfficeMax was fully stocked on both cup sizes.
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Well the walmart lady must have lied to me, or they just stopped stocking the big ones. I went there the other day and saw the small pencil cup so I picked it up, as it was better than the small one I got form Office Depot (doesnt have the lip around top).

Put it together, packed the carbon down in there and attached it to my exhaust fan. My fan prob exhausts about 10x less than it did, but that was expected. My plants arnt even out of vegging yet, they are just giving off the plant smell (pretty strongly too). That is why I hooked up the carbon filter. After about 3 days of being hooked up, Ive realized it doesnt work very well. I can still easily smell the plantish smell. Couldnt imagine how it would work with the plants flowering. Hopefully others have better results.
 

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Well Ive got a 6in fan with 240cfm free air and it only exhausts about 1/4 as much as it use to.
 
just what i was looking for.. 3 questions

is it quiet?

what kind of fan are you using ?

if i used a pc fan that im using now will it work
 
FeRiZaJLI said:
just what i was looking for.. 3 questions

is it quiet?

what kind of fan are you using ?

if i used a pc fan that im using now will it work
Click to expand...


Once attached it did dull the sound of my fan a SLIGHT bit, but only because it caused my fan tow ork harder, and spin slower.

Im using an Aero-Flo fan. Cheapish fan, but 240free air cfm isnt bad.

Dont think a PC fan would work all that great for it. Think it would depend on the cfm of the fan.
 
Skoad said:
Once attached it did dull the sound of my fan a SLIGHT bit, but only because it caused my fan tow ork harder, and spin slower.

Im using an Aero-Flo fan. Cheapish fan, but 240free air cfm isnt bad.

Dont think a PC fan would work all that great for it. Think it would depend on the cfm of the fan.
Click to expand...


oo i c i just made one of these filters using ur DIY just waiting for a fan i just ill google aero flo fan buy one of those from amazon or sumthin thnx for everything dude
 
Do you guys thinK that this would allow enough airflow for a small cab with a 250W HPS? How big of an inline fan would I need?
 
great thread. bought an $85 carbon filter from the hydroponic store near my house, saw this post and returned it! i added two of the filters to my "college" size stealth fridge grow. i have a 6" inline duct fact on top of the box, pushing air upward through a "T" shaped duct. hooked convertors that made the ends of the T 4" instead of 6". then i attached two filters, one at each end. the smell is 100% gone, and lucky for me because i still live at home with the rents!! im only 19 so don't go thinking im a bum now, but thanks for the ideas. I'll get some nice pictures up soon once i have some sprouted seeds.
 
i just posted this same thing on thenook like 3 weeks ago. it's out of a high times or skunk mag.

awesome tek, great you put it up, i just think credit should be given where credit is do. no offense
 
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