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mushpunx
Fungus Punk



Registered: 04/20/14
Posts: 13,394
Last seen: 9 days, 19 hours
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http://www.fungi.com/product-detail/product/all-purpose-blower-549-cfm-free-air-delivery.html 4.65" isn't too thin for laminar flow, most of ours are 5.8 to 6" just because its a typical size sold.
You could use a 1" thick filter and acheive laminar flow but it wouldn't last very long without needing to change it. I dont think just an inch difference would make much a difference in the life of your filter itll last at least a decade if you use a good pre filter
You could use the same blower I did for your filter I think, mine was a dayton blower , 549 CFM @ free air. I linked you to the one FP sells, I think jts the same blower I used. I bought it off eBay for 90$ w free shipping , brand new too. You'll have an easier time locating a blower I hope than you did finding your filter
Edited by mushpunx (12/10/15 10:38 AM)
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Supalemonhaze
Spore syringe hater.



Registered: 10/02/15
Posts: 6,725
Loc: 12" down Europe's butthole
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Re: Hepa filter specs. [Re: mushpunx]
#22638753 - 12/10/15 02:05 PM (8 years, 2 months ago) |
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Yeah me too, they sell inline blowers here for sure. My father has a 4" one lying around in his garage, ill go check the CFM after work.
The prefilter might be a headache though. Apperantly in the eu they don't use them. Only ones I found on ebay were from the US with insane shipping cost. Think ill just buy a car filter though or just use a couple oven filters which are kinda like sheets of hard polyfill. Kinda thin though so I might have to buy 2 if I use those. But if I find a high flow car filter which fits perfectly on my fan that would be my fave choice.
About thin filters being capable of laminar flow I found a couple of threads from a user called Sci fi who explained that perfectly and easy to understand. Bought the filter 5 minutes later lol. Seems like a pro, he put diagrams and charts that would take me a month to read properly :p.
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mushpunx
Fungus Punk



Registered: 04/20/14
Posts: 13,394
Last seen: 9 days, 19 hours
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Quote:
Supalemonhaze said: Yeah me too, they sell inline blowers here for sure. My father has a 4" one lying around in his garage, ill go check the CFM after work.
The prefilter might be a headache though. Apperantly in the eu they don't use them. Only ones I found on ebay were from the US with insane shipping cost. Think ill just buy a car filter though or just use a couple oven filters which are kinda like sheets of hard polyfill. Kinda thin though so I might have to buy 2 if I use those. But if I find a high flow car filter which fits perfectly on my fan that would be my fave choice.
About thin filters being capable of laminar flow I found a couple of threads from a user called Sci fi who explained that perfectly and easy to understand. Bought the filter 5 minutes later lol. Seems like a pro, he put diagrams and charts that would take me a month to read properly :p.
I would sugguest a squirell cage blowrr over inline fan though definitely much easier to so the build with easy to bolt into place
Yea the United States is freezing cold in many states and our windows stay bolted shut so we all get special filters to put in our furnaces to cut down on dust. Dont make much of a difference IMO my allergies are terrible.
If you wanted to send me money to buy one and ship it to you I would. The nice Filtrete furnace filters are 15 bux down the road from me. I don't know what shipping to your country would cost but if you wanted to Ill do it
--------------------
 Amateur Mycologists United AMU Q&A
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Supalemonhaze
Spore syringe hater.



Registered: 10/02/15
Posts: 6,725
Loc: 12" down Europe's butthole
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Re: Hepa filter specs. [Re: mushpunx]
#22639153 - 12/10/15 04:03 PM (8 years, 2 months ago) |
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It doesn't matter much who sends it. Shipping cost is evaluated both by weight and volume. Thanks for offering though. Using a high flow cobe filter should be more than enough.
Guess we will see for the blower. If this one is strong enough I won't boyher buying another one. The more money I save the better . But if I had to buy a new one ill search for the cage type first since its more tried and tested. Not that inline aren't used successfully, they are just less common. Both are essentially the same I guess.
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micelio
Song of Silence


Registered: 04/22/14
Posts: 1,547
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In this world you get what you paid for..
I would like to point out that what I have read from your post, is that some sales guy is selling you a bunch of crap. and that pisses me off...
A 3 square foot filter and a 230 cfm blower will give you laminar flow..
BS. They are taking you for a ride..
A properly built laminar flow hood will last you decades. why buy something inferior...?
I have been trying to help you from day one..
Do you have any clue on how many people are unhappy with their flow hood because they tried to save money..?
Hey.. F--ck E-bay and China...
Spend the extra dollars and do it right.. You'll thank me in the end. All your specs. do not add up. It like some salesman doesn't understand what a laminar work station is..
I'll guarantee you you'll be very unhappy with 230 cfm blower, and some odd ball filter...
There's no shortcut in doing this right.
You probably dislike me but I'm telling you straight...
You say: Its ULPA (0.12m) and for 100fpm (this tells me its a good candidate for laminar flow, I think at least :lmafo) the manual said I need a 230cfm blower. My only concern is that its only 4.65" thick but from what I read it won't interfere with laminar flow, the only downside is its working life.
If ULPA is the cat ass why is it not the standard in hepa laminar flow hood station...?
Do yourself a favor and do more research...
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mushpunx
Fungus Punk



Registered: 04/20/14
Posts: 13,394
Last seen: 9 days, 19 hours
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Re: Hepa filter specs. [Re: micelio]
#22640300 - 12/10/15 08:58 PM (8 years, 2 months ago) |
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Its true the one thing not to skimp on is the HEPA. I was originally searching ebay for mine but in the end bought mine from Fungi Perfecti so I could trust it.
The other main component, the blower, not the biggest deal if you get a used one but you can get a new one cheap enough.
I used hard wood, Aspen for my hood because I wanted it solid. SomedAy I might need to re do the silicone, but tthat's it. That and I change the pre filter every 3 to 6 months. I should never need a new filter.
--------------------
 Amateur Mycologists United AMU Q&A
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micelio
Song of Silence


Registered: 04/22/14
Posts: 1,547
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Re: Hepa filter specs. [Re: mushpunx]
#22640529 - 12/10/15 09:37 PM (8 years, 2 months ago) |
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In this world you get what you paid for..
I would like to point out that what I have read from your post, is that some sales guy is selling you a bunch of crap. and that pisses me off...
A 3 square foot filter and a 230 cfm blower will give you laminar flow..
BS. They are taking you for a ride..
A properly built laminar flow hood will last you decades. why buy something inferior...?
I have been trying to help you from day one..
Do you have any clue on how many people are unhappy with their flow hood because they tried to save money..?
Hey.. F--ck E-bay and China...
Spend the extra dollars and do it right.. You'll thank me in the end. All your specs. do not add up. It like some salesman doesn't understand what a laminar work station is..
I'll guarantee you you'll be very unhappy with 230 cfm blower, and some odd ball filter...
There's no shortcut in doing this right.
You probably dislike me but I'm telling you straight...
Quote:
mushpunx said: Its true the one thing not to skimp on is the HEPA. I was originally searching ebay for mine but in the end bought mine from Fungi Perfecti so I could trust it.
The other main component, the blower, not the biggest deal if you get a used one but you can get a new one cheap enough.
I used hard wood, Aspen for my hood because I wanted it solid. SomedAy I might need to re do the silicone, but tthat's it. That and I change the pre filter every 3 to 6 months. I should never need a new filter.
I'm sorry..
I wish I could send SupalemonhazeS the right lash up for a Christmas present..
Hey....! he should do what you did.. Buy the filter from Fungi Perfecti and in a few month when he can afford it buy the right blower.. Then he is set for many of years...
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Supalemonhaze
Spore syringe hater.



Registered: 10/02/15
Posts: 6,725
Loc: 12" down Europe's butthole
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Re: Hepa filter specs. [Re: micelio]
#22641419 - 12/11/15 02:56 AM (8 years, 2 months ago) |
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Wow, wow, wow. Calm down there. ( unless its just me but it seems like you went apeshit all of a sudden)
I never said I have/am buying a 230cfm blower. What I said was that the specs from the filter said that it wad tested at 230cfm(brand is flanders so I think they know what they are saying/doing). Its true that for 100fpm I would need a bigger one (my calculations say about 300cfm@ aprox 0.6sp). But what I can imagine flandeds meant by that figure is that it will operate at a less fpm. I wouldn't say it won't be laminar just does not operate at 100fpm (some commercial flowhoods have 2 speeds of operation, one is 100fpm and the other is 60fpm and for 60fpm all you need is in the ballpark of 180cfm for my filter). Don't get me wrong I will still buy a good blowrr since by time the resistance increases.
My understanding is that ULPA are not as widely used as much as HEPAs because its both more expensive and overkill for mycology. Bear in mind that I have to calculate shipping expenses as well and the ULPA I bought was one of the only filter with relatively cheap shipping.
I get where you are coming from when you say spend a few more bucks and do it right. Only here its not just a few more bucks, its hundreds upon hundreds of euros.
Dont get me wrong I don't want to start an argument but reading some of your comments im not really sure that you understood half of what I said. Like you say its an oddball filter when its made by a good company with certificates of the tests and all. You say 230cfm blower when I never said that's what im gonna use. Some of them I totally understand, its easy to think a blower is cheap since you bought it cheap, its just not the case for all of us.
For example a 24x24x6 hepa locally costs 490euro VAT not included. Thats over 500USD WITHOUT tax. Just looked up a good blower that is good enough to get me more or less 100fpm and it costs 535GBP. That is over 800USD+shipping from the UK!!!! Granted I will probably find a better deal but experience tells me that it will be nowhere near the 200$ or less that you paid for it.
I will mention that In the same link that micelio sent about building a FH both the ULPA and inline fan are mentioned. So if I can use an inline fan which is lying around and wont cost me 1 cent and which I know is good enough cfm at the sp I need why would I go buy a squirrel cage just so I can be like everyone else?( turns out the one in question is too weak, im just giving an example). The same with a hepa and prefilter. Why should I pay over 200-300euro more for a filter just so I can have a HEPA instead of ULPA or buy filterete for god knows how much instead of a high flow car filter. This is not me "reinventing the wheel" these are tried and tested usable materials found in teks and threads which I am seeing which are worth buying and which are not. Who am I to say that for example the specs of my flanders are wrong if they are made by professionals who do this for a living. If it was I who came up with those figures I wouldn't even attempt to recalculate. I would just say ur probably right, this is not something I am comfortable doing right.
You are a both a cool cat and a helpful dude so I am in no way trying to make an argument. I am still grateful for your help and will remain that way. But IMO you blew a gasket without knowing all the facts.
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