Homemade Grow Room Odor Control


grow-room-carbon-filter-toolsAre you looking to start a grow room at home and keep your garden safe? A common way that grow rooms get exposed is from the strong lingering odor left by your marijuana garden. Though nothing beats a professional system, here’s a great low-cost way to create a effective homemade grow room odor control carbon filtration system  that will keep your garden discreet from prying noses!

Resources Needed:

HEPA Filter Cartridge
Silicon Caulking
Electric Drill
1/8″ Drill Bit
4″ Hole-Saw Bit
4″ Dryer Hose
4″ Dryer Hose Flange
5-Gallon Bucket With Airtight Lid
25lbs. Of Activated Carbon
Blower Fan

1. Start with using your 5-gallon bucket as a template on top of the HEPA filter, trace and cut a circle out. Make sure it accurately in the bottom of your bucket. Remove filter, set aside.

2. Using your drill with the 4″ hole-saw bit, cut a hole in the center of the 5-gallon bucket lid. Test the 4″ dryer hose flange for tight fitment within the hole.

3. With the dryer hose flange in the hole cut through the bucket lid. Take the silicon and apply caulk around the base of the base of the dryer hose flange and bucket lid. Let this set 4-6hrs for an airtight seal.

4. Take your drill and use the 1/8″ drill bit and randomly apply a few dozen holes in the bottom of your 5-gallon bucket (this is where fresh air comes out).

5. Insert your pre-cut HEPA filter into the bottom of your bucket. Add all of the activated carbon. Place lid on bucket and tightly sealed shut. Attach the 4″ dryer hose to the 4″ flange. Now dryer hose is connected to exhaust end of blower.


This will allow the blower fan to move air from your grow room through your 5-gallon filter. The porous carbon will eliminate all the odors from your garden as the air passes through the filters. A excellent way to clean the air of any smell emitting from your flowering garden.


  1. jay

    August 8, 2011 at 4:06 pm

    I don’t have any air exiting the house so I don’t understand why it smells skunky during the day witch is my dark cycle time. It dosnt smell outside at nite. I don’t get it

  2. jay

    August 8, 2011 at 4:04 pm

    I did all that and my house smells great but I can smell my little 3 plant grow outside! What can I do? Please help

  3. cheap vibram

    July 14, 2011 at 6:33 pm

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  4. Num2Stalker

    February 25, 2011 at 10:29 am

    They also make activated carbon filters that have the carbon impregnated into the filter medium itself. These come as plain carbon filters or as hepa style filters. They work great and make changing the filter/activated carbon much easier.

  5. mayhem

    February 1, 2011 at 4:56 pm

    fans are more effective pulling not pushing

  6. Trainwreck

    January 24, 2011 at 8:13 am

    I used a 171 cfm fan that pushed air threw it fine just need enough holes. Not sure if its a misprint but 25lbs is a ton of carbon and will not fit in the bucket.

  7. mayhem

    December 28, 2010 at 2:49 pm


  8. its my god givin tight

    October 1, 2010 at 7:48 pm

    I plan on starting a two plant pc grow box is there carbon filter for these pc grow boxes?

  9. HowGrowWeed

    March 7, 2010 at 3:23 am

    Great! Very useful!

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