Home | Community | Message Board

Out-Grow.com - Mushroom Growing Kits & Supplies
This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Shop: Left Coast Kratom Buy Kratom Extract, Kratom Powder For Sale   North Spore Cultivation Supplies, North Spore Mushroom Grow Kits & Cultivation Supplies   Unfolding Nature Unfolding Nature: Being in the Implicate Order

Jump to first unread post Pages: 1
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
Invisiblenmotion
Lando
 User Gallery


Registered: 07/19/14
Posts: 27
Flow Hood Construction
    #20523836 - 09/05/14 10:42 AM (9 years, 4 months ago)

Hey everybody. I've decided to begin growing gourmet and medicinal mushrooms commercially, and so the necessity of a flow hood has arrived. My math skills are abysmal, and so I decided to contact Fungi Perfecti in Washington to help me match a blower to the 24x18 filter that I was interested in from them as well. They suggested this product:

Universal Blower
It's rated at 1,040 CFM @ .8 SP

Now, as I said, I'm not math savvy at all so the explanation at Fungifun only makes general conceptual sense to me; I understand how a flow hood works, I am just not keen on how to pair a blower with filter accurately. That said, this blower seems very overpowered for this filter:

24x18 Micron Filter

2ftx1.5ft = 3ft²
100fpmx3ft²=300ft³/min or 300cfm
Assuming the use of the above filter at .8" SP and a pre-filter of .2" SP, then I need a blower that provides for 300cfm(or w/20% more power than baseline it would be 360cfm) at 1" SP/approx. 250Pa.

If this math is sound, then that means they're trying to sell me a blower that is waaay too powerful. Is this math good?

Also, they wanted $100 to ship the blower and filter to me which seems silly. I'm prepared to spend $400-$500 for the blower and and filter, but $100 to ship it all just seems like a waste.

I would really appreciate any assistance the community can provide. Also, if there is a filter and blower combo that you really like, would you mind linking it?

Thanks, as always. The Shroomery has been an amazing resource to me as I've ventured into Mycology.:cheers:


--------------------


These helped me a lot starting out:

RR's Mushroom Cultivation Videos
EvilMushroom666's Awesome N00b Friendly BRF Tek


Extras: Filter Print Post Top
Offlinetchyted
miestro
Registered: 09/03/01
Posts: 526
Loc: WA near seattle
Last seen: 9 years, 4 months
Re: Flow Hood Construction [Re: nmotion]
    #20526810 - 09/06/14 01:02 AM (9 years, 4 months ago)

blowers, like the ones you can get from granger, were originally intended for use on heating venting and air conditioning equipment.  most of the motors come with between three and five speeds.  there is one common wire, usually white, and several other ones, (one wire for each speed,) one of the other wires energized at a time, to get a different speed for each colored wire.

a laminar flow hood works by intercepting any contam particles before they have a chance to fall on your media.  one of the slower speeds will produce this effect without stirring up the air in the room, actually making things worse.


Extras: Filter Print Post Top
Offlinedrake89
Mushroom Magnate
Male User Gallery


Registered: 06/26/11
Posts: 4,168
Loc: TN
Last seen: 4 years, 10 months
Trusted Cultivator
Re: Flow Hood Construction [Re: tchyted]
    #20528600 - 09/06/14 01:25 PM (9 years, 4 months ago)

i'm gonna get flamed for this but you can use a 10-12" centrifugal fan (hydrofarm) for these purposes, which is far cheaper new than a squirrel cage fan from grainger.  that said you could also go with a used blower.  they make inline filters for the centrifugal fans if you want to get fancy with it.


to answer your question yes, the fan they recommended is way to powerful for your purposes.


--------------------
Fiery Fungi (like us on faeboo)


Extras: Filter Print Post Top
InvisibleUhurungus
Avoiderer of Bullshit
Male

Registered: 04/20/13
Posts: 838
Re: Flow Hood Construction [Re: drake89]
    #20532268 - 09/07/14 08:44 AM (9 years, 4 months ago)

http://www.grainger.com/product/1TDT2?cm_sp=HIO-_-Home-_-VTV70300505&cm_vc=HPPVZ11&zoneId=HPBTZ11

snoop around this site.  depending on the static pressure of the filter you choose you will need between a 300 and 500 cfm blower.  they one they suggested would be enough to push a 2x3 filter and possibly a 2x4 if it had low enough resistance.

as for filters, i don't have a specific recommendation.  go to ebay and search a bit, try using terms like "laminar" and "hepa" and "flow hood".  try the word "flanders" and "astrocell".  there are no definate answers to the question of what filter to buy.  i know as i've been looking for them for a month straight.  lots of people bought the astrocells, i just bought a flanders laminar flow grade filter.

also check out hepa.com.

also read up as many flow hood threads here as you can find.
if you do decide to buy a FP filter, ask them for the newer "mini-pleat" version, these are made of a different material with larger folds and offer far less resistance and filter greater surface area.  in fact they recommend the mini pleat as replacments in their own hoods whenever that time comes.  they just build a bunch of them with the old style and have to get rid of them first.  this comes from a FP employee i talked to on the phone.


--------------------
I'm never 100% on anything, just close enough to risk looking foolish.


Extras: Filter Print Post Top
Invisibleblindingleaf
blue collar underworld
 User Gallery

Registered: 07/19/13
Posts: 22,008
Loc: sub-surface unseen
Trusted Cultivator
Re: Flow Hood Construction [Re: Uhurungus]
    #20532406 - 09/07/14 09:31 AM (9 years, 4 months ago)

:whathesaid:

i just got a replacement mini pleat from FP, it rocking :rockon:
only problem is that because of less resistance, i have to block off blower in take more than before to achieve laminar flow, but nothing a small piece of cardboard cannot handle.


--------------------
A few thoughts on cultivation
MICROBIAL HUSBANDRY!!!!

The whole is greater than the sum of its parts


Extras: Filter Print Post Top
InvisibleMrGiraffe

Registered: 04/04/14
Posts: 3,149
Re: Flow Hood Construction [Re: blindingleaf]
    #20535477 - 09/07/14 09:02 PM (9 years, 4 months ago)

Check out zorotools.com.  The dayton 1tdt8 (797cfm/549cfms) at grainger is $265.75 (before shipping and tax).  At zoro it's listed at $220.57 and they have free shipping on orders over $25 until September 30th.  Also coupon code VEGGIE (good until 9/30 too) gets you 20% off of $75+ purchase making the 1TDT8 $191.35.  The 1TDT8 may not be powerful enough, but find a dayton model that is, and zoro probably has it for a better price than $289+shipping that fungi perfecti (especially with the free shipping an 20% off they have going on right not).

http://www.zoro.com/g/PSC%20Blower/00011669/?category=5000

You can select the required cfms by static pressure and it will filter out the blowers to the ones the will deliver the proper cfms at that pressure, it's a little bit of a clusterfuck though.  For instance a blower that delivers 1040cfms @ .8" static pressure it lists 2 models ( the 1TDU2 and the 12G810) both are about $20 cheaper than the one fungi perfecti sells, and that's not even including the 20% discount (or factoring the the shipping charges from fungi perfecti)


--------------------


Edited by MrGiraffe (09/07/14 09:12 PM)


Extras: Filter Print Post Top
Invisiblenmotion
Lando
 User Gallery


Registered: 07/19/14
Posts: 27
Re: Flow Hood Construction [Re: MrGiraffe]
    #20547682 - 09/10/14 11:51 AM (9 years, 4 months ago)

Thanks a lot for the input, guys. I'm going to settle on something and make a purchase today so I can get this project out of the way.

Thanks again!


--------------------


These helped me a lot starting out:

RR's Mushroom Cultivation Videos
EvilMushroom666's Awesome N00b Friendly BRF Tek


Extras: Filter Print Post Top
Offlineqrkid
Stranger
 User Gallery

Registered: 04/14/14
Posts: 57
Last seen: 5 years, 8 months
Re: Flow Hood Construction [Re: nmotion]
    #20583760 - 09/18/14 01:34 PM (9 years, 4 months ago)

Not sure if you have got your hands on 1 yet, but I wold suggest looking on craigslist and ebay.
I just picked this up on ebay. Not brand new, but still unused and I payed $50 and $30 to ship. So it was at my front door for $80

http://www.zoro.com/i/G1996635/?gclid=CjwKEAjwheqgBRD5vOfR45az5AESJABy4m8-fRKWgnYCAGD6ZGPpMEG-UxF0_JY-gmA5wTwfLM_OahoCz2nw_wcB


Extras: Filter Print Post Top
Invisiblenmotion
Lando
 User Gallery


Registered: 07/19/14
Posts: 27
Re: Flow Hood Construction [Re: qrkid]
    #20583911 - 09/18/14 02:09 PM (9 years, 4 months ago)

Dude! What a freggin' buy! Congrats on finding a great deal.

I went ahead and purchased the components I sited in my original post, so I spent way too much money, haha. I figure I can use a hardcore pre filter (or even two) to extend the HEPA filter's life a bit, and also be able to upgrade filter sizes somewhere down the line if I choose. I'll post some pictures when I get done building the thing.

I can't lie, I'm a little jelly; you really did find a great piece of equipment for a killer price I think. :cheers:


--------------------


These helped me a lot starting out:

RR's Mushroom Cultivation Videos
EvilMushroom666's Awesome N00b Friendly BRF Tek


Extras: Filter Print Post Top
Jump to top Pages: 1

Shop: Left Coast Kratom Buy Kratom Extract, Kratom Powder For Sale   North Spore Cultivation Supplies, North Spore Mushroom Grow Kits & Cultivation Supplies   Unfolding Nature Unfolding Nature: Being in the Implicate Order


Similar ThreadsPosterViewsRepliesLast post
* 24''x24'' Flow Hood Questions
( 1 2 all )
Cow Shit Collector 11,631 26 02/07/05 11:27 AM
by Arp
* Yet another Budget flow Hood Build.
( 1 2 3 all )
Feelers 24,233 45 06/10/09 09:35 PM
by Digital Reality
* Poor Man's Flow Hood Cow Shit Collector 3,685 9 09/01/03 05:55 AM
by Cow Shit Collector
* Shop-Vac HEPA flow hood? Baby_Hitler 3,671 10 01/26/05 08:33 AM
by YidakiMan
* Constructing a flow hood Dmonikal 3,005 14 10/10/05 04:29 AM
by ohmatic
* flow hood test needed realrasta 2,561 8 09/19/05 09:50 PM
by mycofile
* multiple fans on flow hoods mycofile 632 1 08/20/05 06:11 PM
by RogerRabbit
* flow hood hepa filter question **** update finished with picture*****
( 1 2 3 all )
orchidfanatic 8,040 40 11/21/07 10:11 AM
by orchidfanatic

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: RogerRabbit, Pastywhyte, bodhisatta
1,488 topic views. 0 members, 4 guests and 0 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.023 seconds spending 0.006 seconds on 14 queries.