Printable View
Zandor, i saw a thread a bit back with instructions on how to make your own carbon air filter. If you could run it by me with what materials i need and how to make one i would forever appreciate it.
I'm just a student asking for knowledge from the professor. :)
You get 4 furnace filters not cheep ones and not expensive ones. Get the ones that cost about 5 bucks at HD. They have a metal screen on one side to add support. Place the first one with the metal down. Add 2 pounds of active charcoal and spread it around (I get mine from the fish store that sells pond stuff it cost 4 bucks a pound). Then you place another filter (screen side down) add another 2-pound bag of charcoal then the third filter and the last 2 pound bag of charcoal. Last you want to place the last filter with the metal screen side up. Line them all up and use gray tape to seal all the ends together so the air can only go through the filter and not lose any charcoal out the ends. Make a box that all 4 filters fit snugly in. At the top of the box leave about 8? of space. Install your fart fan at the top of your box the 8? spacing will help to even out the air pressure on the intake. Now I use a furnace screen like a house uses slightly larger then the filters so with 4 screws I can change it out and access what I need to. Mine is installed in the roof and the return just pumps it back into my room. Really it??s that easy the whole thing is to seal all the filters together so they are just one thick filter and to have the air gap at the top so your fart fan does not just draw air from one place in the filter.
It really does work.
Zandor, once again a great little do-it-yourself solution, great job :)
Thanks alot Zandor. I believe it will work. I am going to do just that and we'll see how it comes out. I really appreciate it. I'll update. Happy Growin!!!!!!!1 :D :D :D
what is the carbon filter used for ?
1. Grow odor elimination?
2. Humidity reduction?
3. CO2 ??? Hey! We're nubes. Be nice. Save Zandor the trouble. Chime in.
4. Or just for healthier air supply?
ODOR REDUCTION
It's just odor control.Quote:
Originally Posted by Rezinator
Cool temperatures are the best way to control odor but that's not alway's the case. So carbon scrubbers take care of the rest of the time.
Happy growing
Zandor, I took your advice and ran with it. I got all the materials needed and got to work. In pic 1 you can see that i placed the filter with the metal screen side down. Pic 2 is how i layered the activated carbon. Pic 3 is how i put the second filter over the first one with the metal screen side up. I made two of these and ducted taped those together to form one big filter. I found a box big enough to be the housing. I cut the square hole toward the bottom of the box where the most carbon will be in the filter so the air that flows through, flows through the carbon. On the other side i cut a six inch circle where the fart fan was inserted. I have the fart fan on a timer and speed control. Do you think that this will take care of the odor for a 6' x 9' room? Again thanks for the help Zandor.
Happy Growin!!!!!!!!!1 :D :D :D
Cardboard will absorb the odor and leak out. Door skins are easy to cut with a utility knife. That's about as thin as you can get. It works better if there is an open space where the blower goes. That way the suction pressure through the filter is spread out evenly over the whole screen.
You got the right idea, props to you. :)
Hey Zandor,
From the picture it looks like the opening acting as an inlet needs to cover a larger area of the filter so as to spread the airflow more evenly across the entire surface of the filter.
Much the same as the outlet fan needs to draw from an area that sucks air through the entire surface of the filter on the exit side.
Am I correct in this? We have the same type of flow problems with our racecar radiators and oil coolers. Just going through a small section of the filter does not take full advantage of the charcoal area.
regards,
Max Blast
It's more a matter of air pressure divided evenly over the surface area. Moving a large volume will not last as long as moving it slower through a larger surface. It does not take as long as you think for the charcoal to scrub the air. It's better to suck the air through the filters then it is to blow it through them.
For your racecars try adding fans in the front to not only suck air into filters but it will also break up debris that may block the fins too. You need to extend air-cooling past the fins too because of static backpressure that the ends will create.
I raced off road for 12 years with Score when it was starting up. I even drove Baja 1000 6 times. That was fun but before kids, once kids enter the picture all toys were sold so no more racing for me. I drove a class 5 1600 and class 11 and Class 8 open trucks.
Zandor so your saying that if i was to turn my fan around and have it suck through the filter, as opposed to blowing through, it would work in my favor? That is compared to the way i have it setup now.
Yes but you still need the open air space between the last filter and the fan so the air can draw from the whole filter and not just a few inches. The minimum open air space should be 8" but if you have a more powerful fan then you need more room. From the looks of the fan you are running you may have better luck with a 12" air gap. When you force the air through you are building positive air pressure and forcing it through, the slower it goes through the more pressure builds up.
By sucking it through the pressure is more stable and constant providing a stable airflow.
Sorry for all the questions but i like learning so much.(especially about this) So here is one more. If i was to attach ducting to the exhaust of the fan so the air leaves the room would that still eliminate the odor?
that's pretty cool. posting so i can subscribe..it is great to see someone take on a project and do it, post pix and get good expert advice along the way. this one's worth saving...
As long as its after the coal filter then sure.Quote:
Originally Posted by puff4twentynow
It should be more like
room
--------------------
filters/coal sandwich
--------------------
8-12" open space
--------------------
vortex blower sucking
through filters
--------------------
Vent to ???
Note: The longer you make the run the lower the air pressure will be and the less amount of air will move through the tube. 6' is fine fyi.
Thanks for the knowledge Zandor. The fan is only four and a half feet from the vent so the ducting won't be that long. So what do you think my water cycle should be?
I may have answered that question in your other thread.Quote:
Originally Posted by puff4twentynow
Yes you did. You even answered the next one too. I was wondering if i even needed coco with grow rocks or if i could just run water all day. I learn something knew every day. HAPPY GROWIN!!!!!!!!1 :D :D :D