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The BEST DIY EZ walmart carbon filter for MICRO grows Zen style.

  • by bubbling
  • Dec 15 2009 11:42 AM
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  • er'ryday smokah

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Posted 15 December 2009 - 11:42 AM

A really nice DIY carbon filter i found. haven't seen it on the city yet so i thought i would share it. It's from the creative mind of "Wolfman Zen" from Rollitup.org I posted a link to the original thread at the end.

So my girls have been giving off their sweet sensual perfume for days now, and I know I should have done this sooner... but here is my DIY carbon filter..

Picked up a few things at walmart.

Black duck-tape
Black "Pencil cup"
Smaller black "Pencil cup"
Black ladies socks (pantyhose)
Activated carbon

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Poor some carbon in the mesh like "pencil cup"

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.... just enough so the smaller cup is level with the larger cup.

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Slip the smaller cup into the sock

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Tuck the sock into the smaller cup holding the end of the sock. Pore in the carbon.. keep holding the end of the sock.

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Now pull on the end of the sock and use your finger to guide the carbon into the space between both cups until filled.

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Now pull the end of the sock over the entire filter.. twist the end of the sock at the bottom and pull it up over the end of the cup.

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Now simply use duck-tape to place the filter over your exhaust fan. I used a rubber band to secure it...

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Works great... though I already miss that sweet aroma =[

The BEST DIY EZ walmart carbon filter for MICRO grows Zen style. - Marijuana Growing

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Replies (64)

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Posted 15 December 2009 - 02:16 PM

Nice man, im def going to make one of these, how much was the activated carbon?

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Posted 16 December 2009 - 01:58 AM

great tutorial

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Posted 16 December 2009 - 02:19 AM

The activated carbon was at Walmart? How much and what section? This should be a sticky it is one of the most simple methods I have seen.

  • er'ryday smokah

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Posted 16 December 2009 - 06:00 AM

It's in the aquarium section next to the air pumps and filters and shit. i'm not sure on the cost, as this was a tutorial i just found while thumbing through rollitup

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  • mr echo
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Posted 16 December 2009 - 05:37 PM

I read this DIY before, I forgot it was on rollitup I thought it was here...
Anyways the thread was labeled something like diy carbon filter for less than $40, I'm not sure what the break down was but I'm sure the carbon is one of the more expensive things but everything was under 40 so its not too bad. I found the carbon in a pet store I think it was $25? And you get enough that your not going to use it all up on one filter.

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Posted 16 December 2009 - 06:28 PM

honestly, that is beatiful. I use pretty much all walmart shiz too so I know where to look for it.
took me about 10 minutes to make and cost 11.02 with plenty of act. carbon left to refill


PrplHZ look in the pets section by the fish airstones and stuff.

Edited by spoonyak, 16 December 2009 - 08:38 PM.


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Posted 16 December 2009 - 06:40 PM

carbon is in the aquarium section, 9oz of carbon for $5.99 if i remember right

also, i haven't been able to find more than one pencil cup at my local walmart. i have yet to try office supply stores.

Edited by iAMdela, 16 December 2009 - 06:49 PM.


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Posted 16 December 2009 - 08:40 PM

iAMdela: I ran into the same problem so I bought 2 of the same pen holders and just cut one down to make it a smaller cylinder, worked great but some of the mesh edges caught on the p-hose.

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Posted 17 December 2009 - 03:00 AM

spoonyak: word, good call, i hadn't really thought of that. i changed my whole carbon filter idea now but that's a good thought. also, next time you're doing it, to keep from the pantyhose getting a run in them, a layer of duct tape around the edge of the cut cupholder. this will probably get used in a pc grow for me...

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Posted 17 December 2009 - 03:50 AM

If wal-mart happens to be out of things you can find the cups at staples or michaels. And around my area you can get a 20 oz plastic bucket of activated carbon at petco (aquarium section) for $10

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Posted 17 December 2009 - 08:52 PM

If wal-mart happens to be out of things you can find the cups at staples or michaels. And around my area you can get a 20 oz plastic bucket of activated carbon at petco (aquarium section) for $10

i was going to check office max/depot and other dept stores like target and kmart, but i made a completely different filter altogether that works better for my situation.

also, guys, you should drill holes in the bottom for that extra airflow

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Posted 18 December 2009 - 03:51 AM

also, i haven't been able to find more than one pencil cup at my local walmart. i have yet to try office supply stores.


same here, i found a bigger one at staples.

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Posted 18 December 2009 - 12:43 PM

This has been posted before. But oh yes, it's a great concept.

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Posted 22 December 2009 - 02:25 AM

Has anyone used these enough to be able to comment on how long the filters last til they need to be re-placed with more carbon ???

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Posted 22 December 2009 - 03:22 AM

i'm curious about how this effects fan cfm ratings. one would have to assume it would slow down air flow a bit, right?

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Posted 22 December 2009 - 03:24 AM

also would like to come up with a better way of attaching it to the cab, so its not a hassle to remove all the tape to reup the carbon

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Posted 24 December 2009 - 07:51 PM

If you cant find two different cups, check out my coffee can carbon filter in my sig.

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Posted 22 January 2010 - 09:46 PM

This one is pro! Gotta give you the rep! ;)

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Posted 04 February 2010 - 08:54 PM

i'm curious about how this effects fan cfm ratings. one would have to assume it would slow down air flow a bit, right?

When it comes to air flow and a filter, it's better to "pull the air" rather than "push the air through".
Ideally, your filter would be setup in front of your outtake fan to maximize the effectiveness of the fan, however many people don't have that option and go with what they got.
For me? I just put together metal ducting on my back and top 120mm fans where both fans will blow out to a carbon filter outside the pc.
Most people use pc's for stealth reasons, I'm using 1 because I don't have the space for a tent..... yet. So, having 2 90 deg elbows and a T connector hanging on the back of my pc isn't an issue for me. When I get a working cam I'll post my rig. Oh the filter is going to go on the inside of the duct piping for my exhaust.




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