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

Props dude

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Peace
Zandor

If you go cheap you grow cheap. - Me

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

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.

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→ First grow, bagseed, smells like mango • 250W HPS cab • 7 girls harvested, ~6 oz yielded

→ Second grow, 2x Northern Lights • 250W HPS closet • around 2oz yielded

→ 10x Satori and 8x God's Treat in a perpetual(ish) SOG!


On Thai stick:

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.

How much activated carbon is used in this carbon scrubber?

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

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

Bree

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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?

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

Bree1978

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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.

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

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First Grow

Second Grow

How to make a rubbermaid grow box

How to make a Carbon air filter

Sinsemilla

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. . .

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4/20 Grow. . .4/20/2007 Here I Come. . .

Round 2. . .Second Round. . .

Why is Herb Illegal?

A killer, you keep workin, and working, and working and they keep
taking, and taking, and taking. They'll throw you a few little crumbs
they'll give you a home, a car, a television, a vacation. Someday you
may even have a bank account that you're scared to lose.

-Corperate Avenger

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.

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

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. . .

__________________
4/20 Grow. . .4/20/2007 Here I Come. . .

Round 2. . .Second Round. . .

Why is Herb Illegal?

A killer, you keep workin, and working, and working and they keep
taking, and taking, and taking. They'll throw you a few little crumbs
they'll give you a home, a car, a television, a vacation. Someday you
may even have a bank account that you're scared to lose.

-Corperate Avenger

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

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.

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My Grow 400 watt Hps and 156 watts CFL's(my old grow)

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.

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Never argue with an idiot - they drag you down to their level then beat you with experience.

All of this is just pretend. But if I grew marijuana, it would be in strict compliance with California Law, SB420.

Live wild - it's too late to die young.

"Let the old men who make the wars, fight the wars."

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...

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"I tell you the truth, The Kingdom of Heaven is like the brave snowboarder who enters through the narrow opening in the trees. He finds many fresh turns there, and blessings of all kinds. And there is weeping and gnashing of teeth on the icy groomed runs for the lazy snowboarder who takes the wide open path." - Jonas Carlson


CIS.

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.

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"I tell you the truth, The Kingdom of Heaven is like the brave snowboarder who enters through the narrow opening in the trees. He finds many fresh turns there, and blessings of all kinds. And there is weeping and gnashing of teeth on the icy groomed runs for the lazy snowboarder who takes the wide open path." - Jonas Carlson


CIS.

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

awsom filter man off to make one

This thread is awesome!

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...

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/U...1340118024.jpg
http://www.thefreeimagehosting.com/U...0340117896.jpg
http://www.thefreeimagehosting.com/U...2340118152.jpg
http://www.thefreeimagehosting.com/U...3340118280.jpg
http://www.thefreeimagehosting.com/U...4340118408.jpg
http://www.thefreeimagehosting.com/U...5340118536.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

So can I use this 4" in line duct fan?

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.

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.