How To - Carbon Filter [Archive] - Green Grass Forums

Bodom Children Of

11-08-2006, 06:17 PM

First thing to build is the inner chamber.

pic1 - supplies:
6"-4" reducer
4" cap
2 - 4.5" screw fasteners
10" length of Heavy duty chicken wire
2 - pannyhose legs

pic2 - Wrap the 10" length of chicken wire around the 4" end cap to form a cylinder. I used a bunch of zip ties to secure the cylinder's shape.

Pic3 - Slide the pannyhose legs over the cylinder to act as a screen for the carbon.

Pic4 - Secure the end cap on one end of the cylinder with one of the 4.5" screw fasteners.

Pic5 - Secure the 6"-4" reducer to the open end of the cylinder with the other 4.5" screw fastener.

That's it. The inner chamber is done. Set aside we'll need it in a bit.

Bodom Children Of

11-08-2006, 06:30 PM

Next to build is the Outer Chamber.

Pic1-Supplies
6" cap
2 - 6.5" screw clamps/fasteners
12" length of Heavy duty chicken wire
3 - pannyhose legs

pic2 - Wrap the 12" length of chicken wire around the 6" end cap to form a cylinder. I used a bunch of zip ties to secure the cylinder's shape.

Pic3 - Slide the pannyhose legs over the cylinder to act as a screen for the carbon.

Pic4 - Now you should have all of these parts....almost done:thumbsup:

Pic5- Now slide the 6" cylinder over the 6" section of the 6"-4" reducer (and the inner chamber) and secure with a 6.5" screw fastener

Bodom Children Of

11-08-2006, 06:38 PM

Filling with Activated carbon and finishing it.

pic1 - Without the 6" end cap on the bottom, the filter should look like this....notice this space in between the chambers....this is where the activated carbon goes.

pic2 - I used an oil spout with the end cut off to more easily disperse the carbon into the filter.

pic3 - Here is the filter filled with carbon.

pic4 - Finally put the 6" end cap on the bottom and we're good to go.

Pic5 - Here is the finally product.

Have fun kiddies...post if you have a question:thumbsup: :smokin:

turtle420

11-09-2006, 12:42 PM

Niiiceee. :)

Has my vote for another FAQ in our library.

Thanks Bodom!

mPk

11-16-2006, 03:18 AM

i was wondering.. is the carbon air filter for vegging and flowering? or for curing bud? thanks:) :)

Bodom Children Of

11-16-2006, 04:47 AM

i was wondering.. is the carbon air filter for vegging and flowering? or for curing bud? thanks:) :)

All three....whenever the plant starts to get noticably stinky. :smokin:

mPk

11-16-2006, 05:03 AM

ooo alright i so feel like a noob right now...:confused: its only for removing odor right? i thought it was for the buds to get bigger :o

Bodom Children Of

11-16-2006, 05:17 AM

ooo alright i so feel like a noob right now...:confused: its only for removing odor right? i thought it was for the buds to get bigger :o

yes just for removing odors. :smokin:

VOYAGER

11-16-2006, 06:14 PM

how long will a carbon scrubber last, does the activated carbon need changing after every harvest or so?

Bodom Children Of

11-16-2006, 06:47 PM

how long will a carbon scrubber last, does the activated carbon need changing after every harvest or so?

yeah about every harvest...

Firebloom

11-16-2006, 09:41 PM

Great info Bodom :thumbsup:

Legalizdahurb

11-16-2006, 11:14 PM

Great info. I may be building one soon.
I also vote for this in the faq.

Big_House26

11-20-2006, 07:36 PM

Whats the tab$ on completed can filter?

Bodom Children Of

11-20-2006, 08:09 PM

Is this only if you're worried about the smell?

yes

Whats the tab$ on completed can filter?

don't know, i got all the stuff from hardware stores (lowes, homedepot). I made it a long time ago. i just took it all apart for this "how to" because some people were asking for one.:smokin:

Big_House26

11-20-2006, 08:19 PM

Well Im sure I speak for all of us when I say thanks for do'n it. It's been enlightening...

Bodom Children Of

11-20-2006, 08:26 PM

Well Im sure I speak for all of us when I say thanks for do'n it. It's been enlightening...

No problemo...I made it from a how-to just like the one i made. Might as well pass it on...The activated carbon will probably cost you the most money. The rest it just a bunch of low costing items. :smokin:

orangeman

11-20-2006, 08:53 PM

Omfg, this is a really good tut? I gotta build one :D. How many plants do one of these thing's filter?

Shovelhandle

11-20-2006, 11:59 PM

Very nice instructions, Thanks!

Shov

Tokudai

11-21-2006, 02:23 AM

Great how-to and parts list!

You can use different sized Caps if you need a larger filter (ie 8" cap and 8-6 reducer), and I fill mine with the crystal-type kitty litter - cheaper than activated carbon and works just as good!

Bodom Children Of

11-21-2006, 04:57 AM

Omfg, this is a really good tut? I gotta build one :D. How many plants do one of these thing's filter?

Check out my grows, I use it with one rubbermaid growbox. I LST so its a bigass plant, yeilded 80g. Could be used otherways of course. :smokin:

Very nice instructions, Thanks!

Shov

Welcome! :stoned:

Great how-to and parts list!

You can use different sized Caps if you need a larger filter (ie 8" cap and 8-6 reducer), and I fill mine with the crystal-type kitty litter - cheaper than activated carbon and works just as good!

This is very true also. If you had a large room you can upsize it all. I'm going to have to try that type of kitty litter.
See you Tokudai at the mini pool 3 table. ;)

wildchick

11-22-2006, 12:38 AM

On this filter do you still need to hook a FAN to it for it to work and if so what size fan do u use and best type to get for it and where to get a fan for it if needed???

Jamie

Bodom Children Of

11-22-2006, 04:01 AM

any 4 inch fan preferable inline duct fan or something of the like. canfan, vortex, etc. Try to get a fan with highest possible cfms for your use.

mellogold

11-24-2006, 11:42 PM

Cornelius

12-02-2006, 09:34 AM

can you use this as an in-line filter? or what? how are you supposed to hook this up?
I love it, i've been looking for a how to build one of these for a while, and now i know.

Bodom Children Of

12-02-2006, 02:02 PM

iono if its just cause im stoned or what, but the end without a endcap the 6-4" reducer part, how do you keep the carbon from spilling out into your ducting and how do you seal the inner screen in the reducer so that you get the most suction through the carbon....?if you could post a pick looking down the reducer that would clear this up for me...thx man

edit, ok looking more closly i can see how you made the seal, but the reducers i get at the depot dont have a lip on the inside were i would clamp the 4" sreen to, do you put in a 4" collar into the reducer to get this lip?

I was wondering this also. I made this so long ago that I forgot. It looks like I put the lip in there because there is tape all around it. I would assume yes i put a lip in the reducer.

can you use this as an in-line filter? or what? how are you supposed to hook this up?
I love it, i've been looking for a how to build one of these for a while, and now i know.

Yeah i have mine hook up to an inline fan with ducting.
It won't let me post pics right now or i would show you.

Cornelius

12-02-2006, 07:34 PM

Yeah i have mine hook up to an inline fan with ducting.
It won't let me post pics right now or i would show you.

I'm about to build a cool tube for my hps, and I want to build one of these filters for the system.

Bodom Children Of

12-02-2006, 09:21 PM

I'm about to build a cool tube for my hps, and I want to build one of these filters for the system.

Should work very well, remember you can upgrade the sizes to make a bigger filter for a bigger room. :stoned:

Cornelius

12-02-2006, 10:04 PM

Should work very well, remember you can upgrade the sizes to make a bigger filter for a bigger room. :stoned:

yeah. i'm still curious tho how to stick this in line. It looks like theres a cap on one end, so how would air flow thru?

Tokudai

12-02-2006, 10:45 PM

With a scrubber, generally its at one end or another of the system - you pull air through it or exhaust through it.

This particular type of unit will not work "inline" (ie in the middle of a system) since it pulls (or exhausts) air through the side of the canister

Cornelius

12-03-2006, 12:23 AM

i see... guess i'll have to chang my plans a bit

MisterE

12-05-2006, 04:42 PM

Couldnt you just suck air out of your cool-tube into a vent tube then into the scrubber (or blow through the cool tube, to vent, to scrub)? Thats what I'd do I think. One of these is still in my future, so with a grain of salt.

MrGreenFingaz

12-05-2006, 07:50 PM

Hey, nice thread, good instructions :pimp: I was just wondering, do you think this fan would work if i hooked it up somehow http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=019&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=290053606168&rd=1&rd=1 thanx.

bud luv

12-10-2006, 07:54 AM

This is awesome.

I think the best way to implement this device into your exhaust would be to have the scrubber, then the inline fan, then the ducting, then the exhaust port.

(Scrubber)(Inline Fan)(Ducting)(Exit Port)

I'm gonna make a few of these!

:rastasmoke:

With a few modifications (making the carbon chamber perpendicular to the airflow and using a solid material as the outer layer) you could make one of these to work "inline." THe filter would lose surface area, however.

Tokudai

12-10-2006, 08:23 AM

This is awesome.

I think the best way to implement this device into your exhaust would be to have the scrubber, then the inline fan, then the ducting, then the exhaust port.

(Scrubber)(Inline Fan)(Ducting) (LIGHT) (Exit Port)

I'm gonna make a few of these!

:rastasmoke:

Thats exactly how I run mine, but with the light in the middle.. Theres just a 6" exhaust port piped to the roof

(Scrubber)(Inline Fan)(Ducting) (LIGHT) (Exit Port)

If you are really creative and build the grow room to suit, you can get away with 1 fan for intake, exhaust, circulation and light cooling

bud luv

12-17-2006, 10:27 PM

I just made one of these using Bodom's general guidelines.

Now I just have to go to the store and buy some pantyhose. I'm sure I'll get some weird looks.:rasta:

http://boards.cannabis.com/showthread.php?t=95268 GrowLog

smokin dope

12-17-2006, 10:43 PM

so im guessing to use this, hang it up somewhere in your grow room and it eliminates the odor? I was under the impression, you also needed some sort of fan to blow through.

Let me know, my babies are 2 weeks, and i can tell there gonna be stinky (xxtra skunk)

Tokudai

12-17-2006, 10:50 PM

^^Nope, you were right - you need a fan to pull or push the air through the media to remove the odor.

smokin dope

12-17-2006, 10:58 PM

thank you, im going to get the parts over this christmas break and make it. is it very effective?

Tokudai

12-17-2006, 11:28 PM

I run one with 10" and 6" caps, and hook it right into a 6" fan. This way it has 2 inches of filter media to pull through on every side, plus its about ~ 3 feet tall. I use kitty litter in mine and no-one can smell a thing

The whole room is vented through it like this (Scrubber)(Inline Fan)(Ducting) (LIGHT) (Exit Port), so its sucking through the filter and blowing de-stinkified air across the light. My friend doesn't air cool his light, so the filter is hanging right above the light fixture connected to a fan blowing out, and sucks heat/stink out from right above the light.

They work awesome, I wouldn't even think of not using a scrubber of some kind in any grow. Even the nice smell of a full room in bloom can get a little old after years ;)

Tokudai

12-21-2006, 08:13 AM

Bodom Children Of

12-21-2006, 08:51 PM

wow, I'm gunna go buy some kitty litter now.

Borde in Space

01-02-2007, 03:32 PM

i think that im gonna try this with a 55 gal plastic drum. will be fun to get thru i think that a drill will work. and im gonna make a cabnit for it so it will be stealth (i think that if my landlord caught me then he would ask for a cut!! he he)

canuck grower

01-02-2007, 07:07 PM

Now I just have to go to the store and buy some pantyhose. I'm sure I'll get some weird looks.:rasta:

Yeah I'm not looking forward to that either. I think I'll just tell them that it's for a robbery I'm doing later. ;) I'm going to put one of these filters together over the next few days or week in a cab I'm planning out.

I'm going to try out the crystal kitty litter at first. In case I need it, there's a grow shop here that sells activated carbon for $5/lb. Is that too much? It seems like a lot, but maybe that's why Tokudai uses the kitty litter. :)

-canuck :jointsmile:

Tokudai

01-11-2007, 12:50 AM

Yeah I'm not looking forward to that either. I think I'll just tell them that it's for a robbery I'm doing later. ;)

LOL from my last time buying pantyhose for this project.
Talk about wierd looks

Go to Lane Bryant, or Catherines, or any local "Plus Size" womans shop, and get the biggest pair of pantyhose they have Size F (5'3"-5'9", 400-450 lb)
.. (Hehe the lady looked at me when I asked and said "Sir, these would be way too big on you!")

doco

01-11-2007, 03:39 AM

heres a pic of the kitty litter after 4 months in my filter. So change about 3x a year for 6-8$ a change. Way cheaper than carbon and works great

http://gallery.cannabis.com/data/500/medium/litter.JPG

Thats an awesome pic showing the results of scrubbing. What is that brand of kitty litter? I guess Ive never seen the blue stuff before...

canuck grower

01-11-2007, 03:56 AM

doco: I found some at the grocery store, silica gel kitty litter. I've never seen it before, but I've never had a cat so that makes sense. :) When I get my cool tube and the cab's closed all day it'll be a true test, but so far at night it seems to work.

I just got some pantyhose from the drug store. I didn't think about getting bigger ones, but man it would've been so much easier if I had. I didn't even know they had sizes! :) Ah well, live and learn. I got a strange look from the dude at the shop buying some nylons and a Twix. You story takes the cake though Tokudai! lol :D

-canuck :jointsmile:

Tokudai

01-11-2007, 04:17 AM

Thats an awesome pic showing the results of scrubbing. What is that brand of kitty litter? I guess Ive never seen the blue stuff before...

Fresh Step Crystals

http://www.freshstep.com/img/products/crystalsfoto2.jpg

Zandor

01-20-2007, 05:48 PM

Thanks for the thread I hope you don't mind I made it into an FAQ for others to find easer.

Props dude

canuck grower

01-20-2007, 08:54 PM

Does anyone have any tips on increasing airflow through the scrubber?

I have a 6" 250cfm inline fan hooked up to a cool tube with a 250W HPS in it and my filter at the end. It goes tube -> elbow -> fan -> about 6' of duct -> scrubber at the end.

The temps are too high (> 30 C) with the door closed so I have been leaving it open. Now I'm closing the door but have removed the scrubber. I plan on buying a Vortex fan to fix the problem, unless someone here can help me out.

So has anyone had this problem before? Any ideas?

-canuck :jointsmile:

edit: The scrubber is the same size as this one, 4" and 6" and the roughly same length. This means I have 2x 4-6" reducers at the opening of the scrubber which probably inhibits flow. :( My fan and duct are 6" and that was the only way to fit it without making a giant filter.

Dr.Hashman

01-23-2007, 04:03 AM

I am going to make a grow box when I move into dorm for college. Looks like I am going to be using up all my prepaid meals while saving my "food money" to buy seeds and stuff lol. I better get a 1 room dorm so I can grow... I am also going to be growing shrooms for my friend in a tuberware box.

polarbeer

02-28-2007, 09:05 PM

How much activated carbon is used in this carbon scrubber?

Pic 1- Here are all the supplies you need for this 4" carbon scrubber.

Thinx

04-18-2007, 12:12 PM

Good post greAt instructions am in the middle of solving my air and odour requirements and it was a great help. Have a couple of 4" fans by 12vthat i stripped off something a while ago and needed the filter instructions and the kittie litter is gonna be a great saving

Bree1978

04-19-2007, 10:48 PM

Another lover of the homeade carbon (used silica gel kitty litter here) filter here! Thank you Bodom for posting it!!

:jointsmile: Bree

artemisdakitty

04-23-2007, 10:03 AM

This sounds like an awesome device! One quick question....When I do my closet grow next fall, can I have this set up to where the fan sucks the dirty air through the filter, and then exhausts the filtered air back into the closet? I just don't have way to vent to the outside for obvious reasons (heheheh). I can give good enough ventilation and CO2 and such, just no-where for the smelly air to go. I just worry that others in the complex will notice the smell, even with this scrubber... Think it'll get the job done?:bonghit::baggy:

Bree1978

04-23-2007, 12:45 PM

As long as you got ventilation, it will be fine.

:jointsmile: Bree1978

JamaicanHerbMan

04-30-2007, 03:10 AM

Awsum how to bodom...... for a large size like 12" what could i use to replace the pantyhose??? I'm not too sure if pantyhose come in that size that could fit a 12"

Bodom Children Of

04-30-2007, 03:54 AM

Awsum how to bodom...... for a large size like 12" what could i use to replace the pantyhose??? I'm not too sure if pantyhose come in that size that could fit a 12"

you could try to get the big big mama pantyhouse. :jointsmile:

otherwise just think of something

it just has to be small enough holes so as to not let the carbon/kitty litter fall out. you could probably buy some mesh screen that would work also.

good luck

FreeVenice

04-30-2007, 04:24 AM

JamaicanHerbMan

04-30-2007, 04:12 PM

I missed something does it just sit in the grow room??? or does it connect to a fan? Would this also help with a poorly ventalated room. I mean can it help in the plants breathing by removing the impuritys, and helping the plant gain more bulk. Another form of Co2 despencer. . .

FreeVenice think about it for a sec, the only way for the air to be clean is for the air to be pushed threw the activated carbon so yes it does need a fan. And yes it can just hang from the grow room.No it does not do anything for the actual plant all it does is clean the air. Example removing odour and mold spores thus making a clean grow room. Ventalating well thats for removing heat and keeping fresh air in your room. The filter doesnt do anything about heat but it does keep your air clean from any nasty air born spores. The is a personal thing but hanging a carbon schubber in a grow room i'd only do that with a sealed room with added CO2. Hope that help you Freevenice. :rastasmoke:

detials setup in order from roof down.

1-cord to attach it to the roof.
2-A Fan to suck the stinky air and push it threw the activated carbon.
3-the actual carbon filter.

hope that helps bud

FreeVenice

04-30-2007, 07:54 PM

Thanks alot, I only thought it might help because it is collecting what the plant has breathed out, and that could mean that the plant is able to breath fresher air, in a way. . . I am going to try to get one of these made for the Cab that I am putting together. . .

JamaicanHerbMan

04-30-2007, 10:49 PM

you could try to get the big big mama pantyhouse. :jointsmile:

otherwise just think of something

it just has to be small enough holes so as to not let the carbon/kitty litter fall out. you could probably buy some mesh screen that would work also.

good luck

Bodom i found the perfect thing, it curtian fabric the really thin one that almost see threw. I think it will work great thanks agian man:rastasmoke:

r00tdoctor

05-09-2007, 11:45 AM

Bordom thank you for saving me $$$ lol , im in the process of building a scrubber /cool tube and this filter is the best ive seen.

PharmaCan

06-06-2007, 05:20 PM

I just built a six-inch scrubber using your plans. I saw the same filter online for $250 - It cost about $25 for the materials to make one. Pretty good savings for about an hour of work.

CRIME IN STEREO

06-23-2007, 12:06 AM

hey, great stuff, uhmm does anybody know if you have to use that fresh step stuff or if you can use just silica crystals. I cant seem to find that fresh steps stuff anywhere...

CRIME IN STEREO

06-24-2007, 12:03 AM

hey, just found out they sell active carbon filters for like water filters or something, and they are like 9 bux and are made with active carbon.

norkali

06-25-2007, 06:02 PM

UUUUUGH! You DA MAN! Wish I could post some pics of mine.....will post pics at post #50......

SkunkNZ

08-01-2007, 01:46 AM

awsom filter man off to make one

MaryLane

08-07-2007, 10:54 PM

This thread is awesome!

Megatron

08-08-2007, 04:09 PM

On the exact filter that you built in the pics and the instructions, what is the rated CFM on it? I know the ones y9ou buy in the store are rated for specific CFMs. What size fan do you have on yours? Have you found that there are any issues when using the same size one for different cfms? i.e: If I use this on a 250 CFM fan, will there be a huge difference if i switch it to a 700cfm fan? Would I need to build a bigger one to accommodate the bigger fan? Also if so do you have stats on the different sizes of the filters with there respective CFM ratings? Sorry if this is to specific, just wondering...

JoeSchmoe

08-11-2007, 08:50 AM

Here what i have for ventillation on my grow cab, i also built the scrubber using the original posters are a template, but modified it abit because im putting a 6" inline fan in the bottom.

http://www.thefreeimagehosting.com/Uploads/Images/652165212501340118024.jpg
http://www.thefreeimagehosting.com/Uploads/Images/652155837500340117896.jpg
http://www.thefreeimagehosting.com/Uploads/Images/652171462502340118152.jpg
http://www.thefreeimagehosting.com/Uploads/Images/652177712503340118280.jpg
http://www.thefreeimagehosting.com/Uploads/Images/652183962504340118408.jpg
http://www.thefreeimagehosting.com/Uploads/Images/652191775005340118536.jpg

Mega i cant speak for the original poster, but if you have lower cfms then you have to build the carbon chamer thinner and longer so the air can pass through easier and in equal volumes. I made my filter almost twice as tall and about half and inch thinner as the original posters and the air flows out very easily. There is a pic of it in those links. I also put a bathroom cieling fan in the back and wired a plug cord on it. Fan cost me 39.99 canadian at home depot and moves about 90cfm

5016169

08-15-2007, 05:22 AM

So can I use this 4" in line duct fan (http://www.smarthome.com/3016.html)?

box -> 4" duct fan -> carbon filter? Is that how it works? Would I still have a small fan at the top hole of the grow box to push fresh air in? A pic of the filter attached would be helpful.

JoeSchmoe

08-15-2007, 08:27 AM

bottom of the filter goes into the box about 3 centimeters so that the mesh wire part is above the box. Remember that you want the filterd air to go outside into your room not back into te box. The inline fan fits directly to the bottom of the box INSIDE the box itself. It is pushing air up through the filter. You can use a 4 inch inline if you want too. You could also use a 5 or 6 inch inline. Just make sure that you have the proper reducer and the needed room to attach it to the bottom of the filter. The model show originally has a 4 inch bottom. Mine has a 6 inch bottom. it all depends on the size of the inline fan you own.

5016169

08-16-2007, 01:51 AM

I don't know what I did wrong, but mine is a lot larger and took up the whole damn tub of activated carbon. I had to trim it down ... then I spilled it on the floor. Holy crap what a mess. Oxyclean worked pretty well on the rug, at least while the carpet is still wet anyway. Thanks for the tutorial!

Puta

08-30-2007, 04:11 PM

Hey bros, does a 6" vortex fan fit with this filter? If not, what changes should I made?

stinkyattic

08-30-2007, 04:57 PM

Puta, you can't post under that username. It's been permanently banned. Please use more discretion when choosing a handle. Thank you.

deadhead65

08-30-2007, 08:09 PM

I still don't get how if you set it up as (inline fan)(scrubber)(duct) the air is going to go anywhere once it hits the scrubber since there's a cap on one end of it.

What am I missing here?:wtf:

canuck grower

08-30-2007, 08:29 PM

deadhead65

08-30-2007, 08:52 PM

I don't see how that works either, but I also don't see where that was mentioned. Could you please post a link to the post?

It's common to go (scrubber)<-(inline fan)<-(duct) or with the air flowing in the opposite direction.

edit: I don't think you're missing anything at all.

So the scrubber would be the last thing the air hits before it goes outside of the closet? But still, even that way...how does it get past the cap?

keeko

08-30-2007, 09:12 PM

So the scrubber would be the last thing the air hits before it goes outside of the closet? But still, even that way...how does it get past the cap?

it passes through the carbon(cleaning the air) and comes out the sides....where the panty hose is.

deadhead65

08-30-2007, 11:34 PM

it passes through the carbon(cleaning the air) and comes out the sides....where the panty hose is.

:thumbsup:

wow i can be really dense at times!! lol

keeko

08-31-2007, 02:34 AM

:thumbsup:

wow i can be really dense at times!! lol

ha no worries.........good thing we have marijuana for an excuse:thumbsup:

the joint meister

09-02-2007, 02:38 PM

im in the process of building a cab right now for my first grow, and im planing on getting a 6 inch 450cfm centrifugal fan, will this be to powerful for this filter? im gonna make one with a 8-6 reducer,

peace out TjM

hybridracers

09-02-2007, 08:24 PM

I do fabrication pretty regularly with my line of work. Building the filter isnt really a problem but I am curious as to what fans you guys are using that dont make all kinds of racket.

Anyone have suggestions on the real "silent" fans????

Booyagrandma

09-04-2007, 07:55 PM

I just made this scrubber as of 9/03/07

Made mine to be an 8 inch outside diameter, and a 6 inch on the inside one.

Had two troubles with it, 1) getting the queen size hoes over the 6 inch chicken wire was tough, I was looking at the 8 inch one thinking bloody mercy. Then it came to me I just out the mid section of the hose and fit like a glove over the chicken wire. 2) Still trying to figure out sealing off the open end so the crystals don't come out and into my blower, no answer for this yet, I just hung it and some crystals came out but for the most part its all settled.

I did almost use up all of the 8 pound bag of fresh step kitty litter (the ones with the blues crystals, came out to be about 13 dollars) The thing is massive and weighs damn near 15 pounds. Get out your bungy cords.

Took me about an hour from start to finish, parts cost around 70 dollars (I did make a larger version), checked the outlet air and smells like fresh flowers. The fan I am using is a Blower Fan from the tool store that starts with an M. (Dunno if I can say the name)

All in all it was worth the money, time and energy to assemble this beast, props to the original poster for this rad idea.

Booya

canuck grower

09-04-2007, 10:18 PM

im planing on getting a 6 inch 450cfm centrifugal fan, will this be to powerful for this filter?

Nope, it'll be just fine. I had the same setup for a while.

the joint meister

09-05-2007, 02:50 PM

ok thanks bro, make sure you come check my grow log in a month or two;)

peace out TjM

snktal

09-13-2007, 02:26 AM

I know this might seem stupid and redundant, but after reading all the posts i still don't understand...

how is the fan connected to the filter???

from one of the ends? i thought one side had a cap and the other side was just the reducer...
from the middle? doesn't seem to make sense...

i think i am just missing something trivial of how u connect the final product to the ventilation system...

twoguysupnorth

09-14-2007, 09:36 PM

i thought the same thing when i read it , how does it work? this seems like a stand alone model. you could put another reducer on the other end though to make it an inline scrubber, like the one on the other side. i havnt built one yet, but i too would like to know of a decent, silent, fan that can be bought at a normal home improvement store. fyi this thread is how i found cann . com. when i was looking into a scrubber a long time ago. glad i stayed. that is a chunk of change to put out with the fan and a scrubber if you bought them premaid at a store.

12345-54321

09-14-2007, 11:04 PM

Heres my 2 cents.

I've made 2 scrubbers in the last few months. one 4" & one 6" using depot line fans. I used simple fencing wire (rabbit wire) along with some weed blocker material (used in landscaping, they sell large & small amounts) for the screen sections. For the inner cap, just duct tape it over, and the outer cap use a .89c 8"-10" flower pot base. Then the cost is really just the fan and the charcoal.

Whether you are pulling the stinky air through the scrubber and then out or pushing it through and then out, the result is the same, clean stink free air. Think about it, the stinky air has to pass into the fan ducts' airflow one way or the other....

A little side note is that the carbon for a larger unit will run about $40-50 depending on the store. You'll need roughly 10 pounds for the larger unit. (4-5 28oz bottles-Petco, $9.99)

:bigsmoke:

pastetea

10-10-2007, 07:53 PM

Hey, great how-to post here,

I'm planning on making one of these in a little bit but I have a few questions.

Where the hell can I get the activated carbon?

and

Would a carbon filter be any use for growing in a walk-in closet?
Would I just put the carbon filter in front of my fan?

Cheers! :)

texas grass

10-12-2007, 01:49 AM

Hennessy1414

11-14-2007, 05:59 AM

wow i still dont understand:mad:

could anyone put up some pics of the fan the carbon filter and their grow room connected. that would be great :rastasmoke:

edit: nvm i looked a little closer. :stoned: too much

thecreator

11-14-2007, 08:35 PM

Kitty litter hmm I like that idea not suspicious at all.

smokedoja

01-10-2008, 04:04 AM

iono if its just cause im stoned or what, but the end without a endcap the 6-4" reducer part, how do you keep the carbon from spilling out into your ducting and how do you seal the inner screen in the reducer so that you get the most suction through the carbon....?if you could post a pick looking down the reducer that would clear this up for me...thx man

edit, ok looking more closly i can see how you made the seal, but the reducers i get at the depot dont have a lip on the inside were i would clamp the 4" sreen to, do you put in a 4" collar into the reducer to get this lip?

I was wondering this also. I made this so long ago that I forgot. It looks like I put the lip in there because there is tape all around it. I would assume yes i put a lip in the reducer

OK, I just got all the supplies from Home Depot and im having the same problem as mellogold, the reducer i have doesnt have the lip/collar on the inside... could you tell me what to buy and how to put it on? is it taped or what? it looks like the end of some non-flexible duct....

Nasrudin

01-10-2008, 08:59 AM

Hi everyone,

My first grow is rapidly approaching and I wanted to run my idea by a few of you more-experienced types before I go ahead and ruin it. :)

I'm very limited on height, so I was thinking of making a shorter filter, but with a larger diameter. I would probably have two fans blowing into it, but I'm not exactly sure yet. To fasten it to my box, I was thinking about just getting....you know, those u-shaped things with the pointy ends. The last thing I was thinking about was using some of these (http://www.amazon.com/Holmes-Hammer-Booster-Filter-4%252dpk%252e/dp/B000I0WQWC) instead of pantyhose. (I have a bunch lying around.) Do you think they'll be breathable enough? I can't say I've ever tried to move air through pantyhose, so I really don't have anything to compare it to.

Oh, and while I'm thinking about it, I've looked at some fans and some say on the package the amount of decibels they put out. Some do seem a bit loud, but I was wondering, how much does being inside a wooden box lower the noise level?

Thanks

hondamatt

01-29-2008, 04:21 AM

dude that is kick ass so far looks as good as store baught and sounds like it works good . thank god for making people like you i thaught i could come up with some home made stuff but that is just bad ass good lick and peace out..

CheeseOnToast

02-09-2008, 11:52 AM

you'd be much better off replacing the carbon with silica gel, or maybe mixing the two. Its hard to get hold of through.

mushaboom

02-26-2008, 01:18 AM

can anyone further explain how to put a lip inside to seal the thing? i dont understand what you mean by duct tape it over
thanks

hanayama

02-27-2008, 04:32 AM

for a carbon filter like this one...do i want to push the air or pull it?

Hennessy1414

02-27-2008, 04:39 AM

push the air thru the filter :rastasmoke:

MaryLane

02-27-2008, 08:24 PM

Pull it through.

for a carbon filter like this one...do i want to push the air or pull it?

hanayama

02-28-2008, 12:23 AM

uuuuhhhhhh....could i get a tie breaker vote?

also, new issue for me.
i went to the hardware store to get everything for this filter.
i was going to use a 4" inline fan for it.
i shortly realized that inline fans are just rough wired, no plugs or anything.

is there anyway i could still use? i dont know how to wire it!!

help please!

hanayama

02-28-2008, 06:30 PM

anyone know some wiring 101??

Treetops

02-28-2008, 08:24 PM

anyone know some wiring 101??

Hey hanayama,
Try this link,http://boards.cannabis.com/indoor-growing/147819-my-carbon-scrubber-patterened-after-bodom-children-ofs-unit.html#post1792489 and look how I just wire nutted the two wires using an extension cord...white to white, black to black...green is ground..
Works for me, quite well...

You should have no problem...
Good luck,
Peace,
Treetops :thumbsup:

hanayama

02-29-2008, 04:32 AM

thanks man. i saw your thread a while ago(i posted right under you) but forgot to look 4 it.
what did you ground it to?

Treetops

02-29-2008, 05:26 AM

thanks man. i saw your thread a while ago(i posted right under you) but forgot to look 4 it.
what did you ground it to?

hanayama,
To be honest I taped my up...but I think you could just put a screw in the pipe itself and attach the wire too it..as ground..

Someone please correct me if I'm wrong, as I admit I'm not much of an electrician...but I'm careful...

Hope it works for you, as its a simple and cheap efficient unit..

Peace,
Treetops :jointsmile:

hanayama

02-29-2008, 05:58 AM

cool. thanks again.
ill finally be able to put my real air purifier back in my room, where it is much needed due to some reptilian tennants

maxsuperdanks

03-01-2008, 07:48 AM

Would this filter work for pot smoke?

hanayama

03-01-2008, 02:31 PM

yes max, these will work for ANY smell.

treetops- i got the fan wired...i didnt even think about it, but the 3 pronged "outdoor" power cords have a ground wire as well.
so theres that

how many CFM's are you guys using with yours?

i have a 4 inch 80 cfm and it seems kinda weak.
i know you dont want the air going over the carbon too fast...but...idk

Treetops

03-01-2008, 04:59 PM

hanayama,
Good to hear that...I thought mine was kinda weak as well...but I hooked it up to my 150hps hood and it is keeping my cab/closet in much lower temps than before..plants are liking it very much....see how it works for you...in time maybe you can replace it if you arent happy with how it does the job, but you will have the knowledge you tried and were not successful....

Experiment, experiment, experiment....till you find what works for you best...

Peace
Treetops :thumbsup:

hanayama

03-01-2008, 10:04 PM

i JUST finished putting it together.
i took my real one out of there...im going to let it get a little stinky in there and then put it in there...gotta test it.

and yea experimenting is one of the best parts of this whole deal.
i thought of something after i was done with making it...screen from screen porches would probably work really well. i think the holes would be small enough to block the carbon...next time around maybe

Treetops

03-02-2008, 06:56 PM

hanayama,

Got any pics? Would like to see how you made out.. I used the carbon material and wrapped mine...carbon granuals to me are way too messy and for all the trouble one has to go through to accomplish the same thing, I think its a no brainer to use the them...my :twocents:..my inline fan is a 80cfm..works well, never any smell from my cab...

Peace,
Treetops :thumbsup:

hanayama

03-03-2008, 07:45 PM

http://boards.cannabis.com/indoor-growing/147754-long-overdue-update.html#post1819895
long overdue update -

filter is the last post on the page

hanayama

03-03-2008, 07:48 PM

so the carbon filter material works well too?
i may try that next time... you could make a couple small ones REAL easy with that stuff

good things

igotgreens123

03-05-2008, 08:42 AM

hands down the rubbermaid is awsome... iam going to make it for sure... about how much plants can i grow in the rubbermaid iam only trying to grow 3-4...

Ausguy

03-17-2008, 06:27 AM

Im pretty sure im right, but i just want to be sure :P
In the attachment below, is this where you put the carbon filter?

IE: Do you seal off the grow chamber except for 2 places..
1 the fan exhusting air into the carbon filter getting rid of any smell
2 a hole at the bottom of the chamber to allow air to come in.

In the diagram, im showing that a fan is connected to a grow box, and on the other side of the fan is the carbon filter. Is this correct?

Cheers

http://img299.imageshack.us/img299/1577/exampletc0.jpg

rudye18

03-19-2008, 12:24 AM

Do you guys think if i ground up the carbon it would go throught the pantyhose?

burnttoast

05-04-2008, 04:55 AM

I recently added a carbon filter to my rubbermaid box. I made it out of a "yellow jacket trap" that was supposed to be for catching wasps. Its pretty much a plastic cylinder with small holes in one end and a cone shaped divider inside, with an odd-shaped cap that screws on the other end.

A few extra holes, some tape, and a pound of activated carbon from the fish tank store was all i needed to make it happen. Heres a drawing:

http://img120.imageshack.us/img120/9112/acpicce0.jpg

When i found this thing in the garage it was like someone already knew...
It has worked out well so far, 30 something days into veg, i made it as soon as the green smell started being noticeable. We'll see how it does later on...

Big thanks to original poster/whoever thought about this to begin with, i didn't think about how to make mine until i saw this and thought about it for a while

doodlebugs

05-27-2008, 09:44 PM

push the air thru the filter :rastasmoke:

no, fans work better pulling the air though the filter

FlyGuyOU

10-07-2008, 08:42 PM

I just made one of these today, so far its been running about and hour and ive noticed a sig decrease of smell from my 7flowering ladies (week 2)
I shortened mine up an inch or two but thats about it. I just got a small 4" inline fan pushing 80cfm, which seems to be working well. my room is only 4x3x8 so thats just about a full air filter every min...

sleepyG

11-04-2008, 07:10 AM

this is exactly what iv been looking for. this belongs in the grow FAQs. thanks again. BURN IT:hippy:

ganjamaster23

11-30-2008, 07:56 AM

Are you using the Sea of Green technique on your plants or is it just one plant with many branches?

ConanTroutman

03-19-2009, 11:00 PM

Story, great tutorial and great looking end product. I built a filter a while back and it did work very well for a few days, but then it stopped working.. Wasn't sure about the carbon quality really, I got it in a pet shop here in Ireland.
Just said activated carbon on the front and had hard little cylindrical pellets of carbon inside. Only about a pound in the pack like.Any ideas? I guess I'll just keep trying to find different brands..Anyone have similar experience?
Turns out Skunk #1 is one of the smelliest strains btw, should've checked first..lol.
Thanks
Edit- It was Supa brand carbon btw.

ledtime

08-27-2009, 02:27 PM

Worked like a charm for me! Filled it with fresh step kitty litter. Instead of using pantyhose over the outside layer I used the 1/8" thick carbon filter from Lowes.

farmerjz

08-30-2009, 07:28 PM

any how 2's to build a reflector 4 a 400 mh ballast a buddy doesnt have much cash flow but can make it at work 4 free???

Zompton

10-07-2009, 03:49 AM

If i used the following in-line duct fan how would i safely do the wiring so i can plug it in like a normal US plug?

Amazon.com: 6-Inch 110VAC 250 CFM In-Line Duct Booster Fan: Electronics (http://www.amazon.com/gp/product/B0007N5LI6)

I just have never wired a fan and im worried about fire hazards.

robndebz

10-11-2009, 01:42 PM

:thumbsup: just one question as im a noob. where does the filter go in relation to intake/outake/fan setup ?

misslilly

10-11-2009, 02:37 PM

After the filter. so the air is being pulled through.

vtguitar88

11-04-2009, 03:19 AM

Hey this looks awesome, I will try to build this. My question is about where and how to get the supplies. I'm good as far as the chicken wire, carbon, and panty hose (hehe) but I have no idea about the end caps, reducers, and screw clamps. Is this something where I could walk into my hardware store and say, hey I need a reducer, and they'd point me to the right product? It seems like you'd have to have more specifics but I have no idea what these things actually are. Thanks for any help, sorry if this sounds retarded...

misslilly

11-04-2009, 03:25 AM

You should be able to get all you need at a hardware store or lowes and home depot. And yes and they should point you in the right direction. Just ask for the parts as they are described.

vtguitar88

11-04-2009, 03:38 AM

ok thanks, yea i was able to google the end caps and reducers and find those online, but I couldn't find anything online similar to the screw clamp by googling 'screw clamp' or 'screw fastener.' Is there some other name these might be called by, just so I know better what to ask for? In my experience the people who work at my hardware store in town are usually pretty clueless about anything I might think to ask for, even with the right name! So something I don't know about seems pretty doubtful... Thanks again!

misslilly

11-05-2009, 01:55 AM

Your welcome. The clamps would be for ductwork. Like a vent hose. It can also be called a hose clamp. But that is for smaller sizes mostly. For these it should be called a duct clamp.Here's one, and they are a good place to buy from. Quick shipping too.
Duct Clamp 6 [Duct Clamp 6] - $1.95 : neHydro.com, Hydroponics and Gardening Supplies (http://www.nehydro.net/index.php?main_page=product_info&products_id=451&zenid=b7379042c3a4bdde079c08f2d7dba1fd)