Made my own filter

Macncheesehaze

Macncheesehaze

Well-Known Member
So I have an ipower 4 inch I believe activated carbon filter that was just pulling air through it too hard. So I took two activated charcoal (same shit if my understanding is correct) that go to fryer systems in some restaurants, taped both of them up individually and then cut holes in the middle to connect and snake through the filter. Works perfect. Pretty proud of my ingenuity here lol.
 

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Midiver

Midiver

Active Member
Macncheesehaze said:
So I have an ipower 4 inch I believe activated carbon filter that was just pulling air through it too hard. So I took two activated charcoal (same shit if my understanding is correct) that go to fryer systems in some restaurants, taped both of them up individually and then cut holes in the middle to connect and snake through the filter. Works perfect. Pretty proud of my ingenuity here lol.
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Great idea , Ive been checking out how to build my own cause activated charcoal is only a dollar a lb when u buy 50 lb, I dont want to spend 140 dollars for a lb of charcoal
 
printer

printer

Well-Known Member
Midiver said:
Great idea , Ive been checking out how to build my own cause activated charcoal is only a dollar a lb when u buy 50 lb, I dont want to spend 140 dollars for a lb of charcoal
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Do you have a brand of activated charcoal? I am trying to find it at a reasonable price.
 
Midiver

Midiver

Active Member
buyactivatedcharcoal.com

GRANULAR Activated Charcoal (Coconut) 4x8 mesh AW

<div class="product attribute description">Bulk Granular Activated Charcoal 4x8 Mesh made from coconut shell - ACID-WASHED (AW) for extra purity.</div> <div class="product attribute description"> </div> <div class="product attribute description">This hard, highly adsorptive charcoal is used...
buyactivatedcharcoal.com buyactivatedcharcoal.com

Chewy had a box of 64 oz. a couple of days ago, and a month ago they had a 50 lb box of it, but I don't see either on their site now. That Fish Place that Pet Place may have it but you would need to call, they are in Lancaster PA
 
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piratebug

Well-Known Member
The most efficient filter is a flat ended cylinder type filter that has 1 inch of AC per 142 CFM of filtering and that cylinder matches the exhaust fans port size! Cylinder type filters like most people use in their grow rooms are very inefficient, only the first 3 inches after the opening maintains a greater than 50% efficiency, its called science, air will always flow at the greatest rate of speed where it encounters the least resistance, so if you don't have a flow rate tube that would equalize the flow rate along the entire length of the cylinder, then only the first 3 inches after the filters opening will ever maintain a greater than 50% efficiency. That's why most companies today allow for the user to flip the intake around because they know that only the first 3 inches of their filter is actually filtering most of the air being sucked in through the filter.
 
printer

printer

Well-Known Member
piratebug said:
The most efficient filter is a flat ended cylinder type filter that has 1 inch of AC per 142 CFM of filtering and that cylinder matches the exhaust fans port size! Cylinder type filters like most people use in their grow rooms are very inefficient, only the first 3 inches after the opening maintains a greater than 50% efficiency, its called science, air will always flow at the greatest rate of speed where it encounters the least resistance, so if you don't have a flow rate tube that would equalize the flow rate along the entire length of the cylinder, then only the first 3 inches after the filters opening will ever maintain a greater than 50% efficiency. That's why most companies today allow for the user to flip the intake around because they know that only the first 3 inches of their filter is actually filtering most of the air being sucked in through the filter.
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Are you saying,

"filter that has 1 inch of AC (Water Colum) per 142 CFM of filtering"? What is AC?

Also confused (sorry) about what you are saying about the 50% efficiency. That only the first 3" only filters 50% of the smell? Or that 50% of the flow goes through the first 3" and the other 50% goes through the rest of the media?
 
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piratebug

Well-Known Member
printer said:
Are you saying,

"filter that has 1 inch of AC (Water Colum) per 142 CFM of filtering"? What is AC?

Also confused (sorry) about what you are saying about the 50% efficiency. That only the first 3" only filters 50% of the smell? Or that 50% of the flow goes through the first 3" and the other 50% goes through the rest of the media?
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AC = Activated Carbon


On average a 1 inch layer of activated carbon can effectively filter 99.9% of the "airborne hormones / pheromones", if the filtering flow rate is 142 CFM or lower and the humidity of the air being filtered is at 50% RH or lower. But remember a carbon filters flow rate efficiency will always be effected by the humidity that is in the air being filtered! But you can always greatly increase the effectiveness of a carbon filter by keeping the filters activated carbon drier with drying / heating strips. In fact in the best active carbon filtering systems you will not see a carbon filter that doesn't have drying control built right into the filter. Oh yeah, and one last thing... please be aware that not all Activated Carbon will filter ones air as effectively as another. I only buy mine through Delta Absorbents as they are the only U.S. company that sells (Stage 5 = critical clean air filtering absorbents) that are OHSA / NIOSH approved!
 
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printer

printer

Well-Known Member
I got a little confused as in the HVAC world AC stood for Air Conditioning. I guess I can assume the filtering using carbon pellets and the ones using fiber mats have different percentage of filtering efficiency per inch.
 
printer

printer

Well-Known Member
Midiver said:
Great idea , Ive been checking out how to build my own cause activated charcoal is only a dollar a lb when u buy 50 lb, I dont want to spend 140 dollars for a lb of charcoal
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The best I found is $6/lb plus shipping.
 
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