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TheBoJim
Strangest


Registered: 07/23/20
Posts: 449
Last seen: 10 months, 7 days
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why not just get a filter and a blower that others have used and are proven to work instead of figuring out yourself?
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FungusFreedom
Stranger



Registered: 08/21/20
Posts: 39
Loc: Midwest
Last seen: 1 year, 11 months
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Re: Flowhood items. Advice so far. [Re: TheBoJim]
#27086470 - 12/12/20 10:06 PM (3 years, 1 month ago) |
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Most of the write ups I saw for 24x24 used a 1tdu2 which is apparently way way more than necessary. It must be a fairly wide range that will work though, because I am using a 1tdt8 blowing just shy of 400cfm at 1"wg, where 1"wg is the max resistance for my 18x24 filter, and I still get nice even flow. Probably just more than the 100fpm you need. As long as it stays laminar I can't see having a little more airflow as a terrible thing.
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GTEED
Stranger


Registered: 12/02/19
Posts: 99
Last seen: 2 years, 10 months
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Re: Flowhood items. Advice so far. [Re: TheBoJim]
#27086494 - 12/12/20 10:56 PM (3 years, 1 month ago) |
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well, I would love to know which filters/blowers (expecially filters) others are using. Do you have any links or any of the specifics TheBoJim?
Yeah FungusFreedom, If I were to go with the earthtougue filter I posted above the 1tdu2 would work. My only concern with doing this is it would cost me $109 dollars more for that blower.
So many variables. After I get all this figured out and built I'm considering making a tek that has up to date specifics on which filter and blower people should buy if they are looking to make whichever size flow hood I make.
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TheBoJim
Strangest


Registered: 07/23/20
Posts: 449
Last seen: 10 months, 7 days
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Re: Flowhood items. Advice so far. [Re: GTEED]
#27086503 - 12/12/20 11:14 PM (3 years, 1 month ago) |
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Quote:
GTEED said: well, I would love to know which filters/blowers (expecially filters) others are using. Do you have any links or any of the specifics TheBoJim?
i am just beginning my flow hood research and know almost nothing, so that was more of a question then a suggestion. i assumed with all the people here that have made hoods there would be a ton of info to go to.
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Eclipse3130
Servant of the Fungi



Registered: 10/06/13
Posts: 6,220
Loc: PNW
Last seen: 1 hour, 18 minutes
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Quote:
CocaineBuffet said:
Quote:
Eclipse3130 said: Why not just buy a pre-made ready to go 2x4. They're only about $1000 shipped brand new, save time and money

If you tried to build a 24x48 Flowhood it would cost quite a bit in parts, plus however long it might take you to build it. Time is money, and it's a lot better than buying a FungiPerfecti one for $3000 just a recommendation if you want to skip the building process and want one professionally made and delivered.
-------------------- "In The Material World One seeks retirement and grows Old In The Magical World One seeks Enlightenment and grows Wiser In The Miraculous World One seeks nothing and grows Lighter As we all tread the Homeward Path we will explore many Realms And one day... we will all Realize that all experiences are Simply Different ways in which The All-That Is Perceives Itself"
Edited by Eclipse3130 (12/12/20 11:32 PM)
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Groo
sola dosis facit venenum



Registered: 12/06/14
Posts: 2,310
Last seen: 20 days, 23 hours
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I have a 36x72 and a 24 24... Its not wide enough and I find its a bit too tall.
I wish I had found a good deal in ebay like i did that 24 high capacity. I kept looking at 18x 38 or 24x36 or 2430.
Cocaine please tell us why you seem to think teh FFUs are shit. I agree but I want to see why you say.
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GTEED
Stranger


Registered: 12/02/19
Posts: 99
Last seen: 2 years, 10 months
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Re: Flowhood items. Advice so far. [Re: Groo]
#27086833 - 12/13/20 07:19 AM (3 years, 1 month ago) |
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Quote:
TheBoJim said:
Quote:
GTEED said: well, I would love to know which filters/blowers (expecially filters) others are using. Do you have any links or any of the specifics TheBoJim?
i am just beginning my flow hood research and know almost nothing, so that was more of a question then a suggestion. i assumed with all the people here that have made hoods there would be a ton of info to go to.
Ah yeah i cannot seem to find any specific filters anyone has used. Usually if they wrote what filter in thier post along with a link the link usually ended up being a dead end in one way or another. (no longer operating sites, ect)
I know i could use Fungi perfect.com, earthtounge.com, or mushroompatch.com and buy their filters and the blowers they sell I guess. I would prob be better off with fungi perfect. Im guessing they have been in business longer and would have it figured out what works.
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RoscoeReturns
Crotchety chode man



Registered: 02/12/18
Posts: 1,738
Loc: State of Confusion
Last seen: 3 hours, 51 minutes
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Re: Flowhood items. Advice so far. [Re: Groo]
#27087026 - 12/13/20 09:38 AM (3 years, 1 month ago) |
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Quote:
Groo said:
Cocaine please tell us why you seem to think teh FFUs are shit. I agree but I want to see why you say.
Not cocaine, but I’ll chime in on why FFUs are shit for this application. They use a 3” mini pleat filter and usually a centrifugal or inline duct type fan. This combo is not great at creating laminar flow. They do a great job of cleaning the air, and in their designed application that is all that is needed. They work by reducing the number of particles/contaminants in the airstream. This dilution works great in the ceiling of a clean room. Typically these are too far away from critical sites to be able to maintain laminar flow anyway, so it’s not a concern. In our application we not only want clean air, but also laminar flow to prevent contaminants on our hands/tools/supplies from being reintroduced onto sterile media via turbulent flow. FFUs are not good at creating this environment. They do work for some people. People who clean and sanitize their tools and have good sterile technique can get away with the low particle airflow the FFUs provide, but in any critical application I never see FFUs used in this manner. FFUs to dilute the particle burden in the room, but true LF hoods at the point sterility is needed.
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