Making Your Own Effective Carbon Filter

[HC01]

A Carbon filter is great for reducing odors. They are attached to your ventilation

system. Here is how anyone can make a carbon filter to remove odors for

cheap. This is a very simple and effective unit that will work just as well as a

commercial unit that costs $400+ USD dollars.

Supplies:

-6" pvc clean out cap available at any hardware store.

-4" to 6" adapter (available at any hardware store) - you could substitute this

with a 4" to 6" pvc adapter.

-a roll of aluminum screen (aluminum is better, not fiberglass; you need the

strength of the metal to make it retain it's shape).

-a roll of duct tape.

-a clothing hamper(you can probably find other suitable containers of varying

sizes).

-roll of high loft quilt batting.

-a length of 4" dryer vent hose.

Virgin Activated Carbon:

You can get carbon at most aquarium supply web sites - the bulk containers are

best here. Kent marine or Esv brand is pretty good. Pelletized activated carbon

in the 5 gallon bucket - 5 gallons should do at least a couple fills, which should

last for years. You can use lignite-based carbon, but be sure to find "activated"

and "pellitized" - it is much more effective than the crushed carbon.

Pelletized activated carbon has been crushed and formed into pellets, then

washed in an acid solution to create millions of charged pores in the pellets. As

air passes through the pellets, it attracts odor ions and particles. The carbon

becomes “exhausted†when all the pores are clogged. Pelletised carbon has

more available surface area than the crushed stuff, and becomes exhausted

much more slowly. It can be found and most online aquarium supple outlets

Construction:

Wrap open

Wrap open the roll of screen around the pvc cap, then duck tape the cap in

place. This serves to hold the screen open to the appropriate size for use.

Trim the screen roll down to the appropriate length for the size hamper you are

using. Just eyeball it to be even with the top of the hamper rim - just be within

and inch or two.

The next step is to insert the 4" to 6" adapter and tape it in place.

Now we need to wrap the tube we just built in some of the quilt batting. Unroll

the roll of batting and double it over until it is the same length as the tube we

have built.

Here I show and the appropriate batting length for the hamper we are using -

this means unfolding the batting one time after unrolling it; it is then

conveniently cut to the right length.

Now tape the end to the screen roll the tube around till the batting overlaps just

a bit and trim her off, then tape the batting up nice and clean.

Ok, now we need to line the inside of the hamper with the batting - the same

fold size will work here also. Just wrap the inside and then tape it to the top rim

so that it wont move around or drop down into the hamper during filling.

Now we can insert the tube we have just finished building inside the battinglined

hamper basket. Hold the inner tube as you pour in the carbon between the

two layers of batting. You can change the amount of carbon by simply wrapping

the tube with more rounds of batting. This filter would probably use 7 pounds or

so.

Note: a 26mm thick layer of carbon is considered an optimum thickness for smell

removal and blower backpressure.

All we need to do is add a roll of batting to the top to close things off nicely.

Now we can cut out the top so that we can get the lid over the tube end. Stick

the lid on and maybe tape it down if you need to.

Now we can attach out 4" dryer vent hose and tape it in place. Attach the other

end to a suitable air blower, and wha-la! - a clean fresh smelling room!

Here is an example of taping a dryer hose to the output on a blower, but you

can get blowers with flanges at most grow shops.

There you have it. Commercial-grade effective homemade carbon filter for

eliminating ALL exiting odors in your grow room.

Thank you for reading.

Peace. : )

[Dust]

very very cool topic man!!

how much more or less did it cost you to build it?

Thanks for the hard work very detailed Homemade topic gotta love it

thanks for the share have a good day

[HC01]

Obrigado !!

[mopman]

Excellent post , Just actually had to make a emergency one that i fitted yesterday , similar design with just the aluminium screen and foam cable tied around but i could not find any carbon at the time and My cheese and WW are seriously stinking up the place and can smell them out my window in the morning as i run my lights at night.

I used cat litter , the crystal looking one and if you can believe it i had no smells this morning. Just thought i would let you know that works aswell. Not sure for how long but we will wait and see.

[Greenthumb69]

defo... HC01 props where its due man. Inspired me to sort my crappy home filter... i had a piece of tubing filled with carbon and cat litter held together with a pair of tights. Ur version is a little on the large side for my needs but urs really helped figure out the mechanics etc. I'll post my attempt if it works good. peace and love

[Bam-Bhole]

Cat litter ? What is that ? a link maybe..

What about those ONI sticks - said to remove all odors without masking it with another smell.

Anybody tried that out ?

[mopman]

Cat litter works but only for a few days

[Greenthumb69]

mopman peace bro from ur profile pic it looks like you know what ur talkin about... lol they got some super dooper crystals that might work well. Anyways ill post up my attempt. all done now and working nicely.