Unofficial Dry-Vac Carbon Filter

I also just cut an old screen off a door and made it a few inches oversized and jammed in covering carbon. Leave a couple of inches or so around sides so it would fit over hood connector. Had to clean glass a few times do to carbon dust so it might be wise to shake out the dust in a strainer before using.

shishkaboy said:

i got some pantyhose and used 2 of them. just the reducer the filter the pantyhose carbon and duct tape

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Nice. Hope it lasts a long time. The pre-filter might be the trick to that though.

KrAzY80 said:

I have not had to replace carbon yet but I plan on replacing after this grow. So it will be 6 months. I dont have a prefilter around mine but is a good idea because its getting really dirty. But the shopvac filter is only 10 bucks at menards so its not to a big deal to just replace the whole thing. They also have hepa and other high grade filters for a little more cash.

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That's great that yours has lasted so long. It took me forever to get around to the pre-filter thing, but when I did, I realized how important a role those $4 bucks could play. But thanks Krazy, I have a stray cat that comes around called Crazy. If you put your hand to your side he will jump and headbutt your hand just to get a free pet or good rub up.

hey this is awesome guys i seen this and realized i had an old shop vac in the basement so i went and got it and took a little trip to the hard ware store and made myself somethin i thought i was gonna have to spend a chunk of change but in stead i spent some change!!! wicked is the only word that describes this thing!!i was sceptical at first but let me tel ya what it really worked!!!thanks man

Hello all. I just joined the forum today, looks like there's lots of good stuff on here.

Totally inspired me to make my own! Thank you for being so thorough. I will be making one that is double the size and I will let y'all know how it turns out.

this is one of the best DIY Ive seen here thanks for all the handy pix

Bump.. Does this work as well pulling the air thru the filter as it does pushing the air thru the filter? I'd like to put it inside the cab

BluBerry said:

Bump.. Does this work as well pulling the air thru the filter as it does pushing the air thru the filter? I'd like to put it inside the cab

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For pulling air through, I'd either point the cone inwards towards the master flow collar itself or make a cylindrical filter with two 4" reducers(Capping one end off). Reverse Cone will require filling it with more carbon, but it will get the job done. Double reducer cylinder would be about an inch thick of activated carbon. Most likely enough for a cab. You might want to use some sort of loose fabric or cotton ball to place between the carbon in the lid to make sure the carbon is tightly compressed if you choose the reverse cone.

Edit: This thread is a sticky, but thanks for the bump anyways.

Awesome tips man, thanks heaps

looks great and neat! i plan on building this haha =P all i wanna know is what the paper around the screen is for? and is it replaced with carbon sheets now?

great thread, dotted all the i, crossed all t's. thnx fam'