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mycopiss
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I need to buy a Flow Hood! HELP.
#26663427 - 05/10/20 09:46 PM (3 years, 8 months ago) |
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So I am new to the flow hood thing, and I am not sure what type of flow hood or filter I should get. Also who is the best supplier for something like this?
I have seen some that are reasonably priced on alibaba, but I have no clue if these are the correct type of flow hoods to use.
On Ebay there are these Hepa fan/filters, I think they might be the right kind, would this type of filter work for mycology? https://www.ebay.com/itm/HEPA-Fan-Filter-Ceiling-Grid-Unit-24-X-48-Clean-Room-277v/283844259161?hash=item42166fad59:g:ujQAAOSwQ3Jd0YSq
I like the idea of a 4ft filter for a much larger working area. Bags are getting contaminated and its probably because I dont have a flow hood.
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Strainsfordaze


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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26663438 - 05/10/20 09:50 PM (3 years, 8 months ago) |
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looks like a ceiling unit you are looking for a laminar flow hood
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mycopiss
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Im just not sure if the filter is the correct type, or correct fan.
This dude says they are good on this website, the one I linked to on ebay seems very similar. Check out his huge filter setup its pretty interesting. https://myctyson.com/about/tools-i-use-recommend/#Bulk_Agar_Powder_for_Mushrooms
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Spirit-Crusher
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26663522 - 05/10/20 10:32 PM (3 years, 8 months ago) |
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I was gonna buy of those too.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26663921 - 05/11/20 07:02 AM (3 years, 8 months ago) |
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That guy sells mushroom supplies for a living he probably knows more than I do. I think I'm gona go for it. Are you gona grab one or do the multiple filter thing? I think 1 will be enough for now. I suppose 2 might be better?
I'm also not sure what speed to run this thing at, it has 3 speeds. The max is around 500cfm
Im convinced I would have way less bags that go bad if I used a flow hood/filter. I was at around 30% loss on bags, I got it down to maybe 15-20% of the bags that I am loosing to contam. The glove box is just driving me nuts, and not fun when youre using 5qt bags!
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rumfor69
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I did a lot of looking into those FFU units and what I found is there are ones that do have a true laminar flow. But it's not the cheap ones. It has to be one of the nicer ones and they get up to about the $800 range. Those cheaper ones are just not designed with as nice of a plenum behind them to give even air flow across the surface. That being said what it really comes down to with those is the room in which you use them. If you have a sealed room and you let that thing run for a cpl hours to reduce the air particle count down to nothing in the room then it will maybe work just fine anyhow.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664022 - 05/11/20 08:02 AM (3 years, 8 months ago) |
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I would assume that they are safe to use that myctyson site seems legit
I will be using a fairly small sealed, clean room. 4ft x 8ft. What type of flow hood do you have dude?
I thought about buying a 48" wide Hepa Filter, fan, and build my own? I just dont know how to choose the appropriate filter.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664023 - 05/11/20 08:03 AM (3 years, 8 months ago) |
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Any other recommendations on Flow hoods? Certain brands or where to get them?
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664034 - 05/11/20 08:10 AM (3 years, 8 months ago) |
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http://www.earthstongue.com/product/48x24x6-HEPA-FILTER-REPLACEMENT
Here is the filter alone, no fan, 48" around $500 shipped. I dont mind spending a little more, if something like this is a better solution.
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rumfor69
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664043 - 05/11/20 08:15 AM (3 years, 8 months ago) |
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Quote:
mycopiss said: I would assume that they are safe to use that myctyson site seems legit
I will be using a fairly small sealed, clean room. 4ft x 8ft. What type of flow hood do you have dude?
I thought about buying a 48" wide Hepa Filter, fan, and build my own? I just dont know how to choose the appropriate filter.
I have the series one flowhood from fungi perfecti but I bought it years ago when they were only $500. Their website has one of the nice FFUs on there too but they want over a grand for it. There's websites where you can buy FFUs factory direct and have them custom made with all the options you want like a HULA or whatever filter instead of HEPA which filters down to two microns instead of three. And they give way more specs on the CFMs and everything.
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rumfor69
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Re: I need to buy a Flow Hood! HELP. [Re: rumfor69]
#26664054 - 05/11/20 08:20 AM (3 years, 8 months ago) |
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These whisper flows that you can customize are the ones I'm looking at but again I'm not %100 sure on their laminar flow but you can see they have a large plenum box on the back and they're not cheap
https://www.terrauniversal.com/whisperflow-fan-filter-units.html
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rumfor69
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Re: I need to buy a Flow Hood! HELP. [Re: rumfor69]
#26664059 - 05/11/20 08:24 AM (3 years, 8 months ago) |
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But if you go through and choose the options and add the nicer filter they come to almost $900 which is still great for a 2'×4' flowhood. And talk about the special baffles in them to create uniform laminar flow across the surface of the filter. Where as the cheaper units don't specifically say they do that.
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Crackatoa
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Re: I need to buy a Flow Hood! HELP. [Re: rumfor69] 1
#26664156 - 05/11/20 09:45 AM (3 years, 8 months ago) |
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You can go to fungi perfecti and they have filters and fans that go together. I got my filter and fan there 12x24 for $450 and built the box myself. All together you out one together for less than $500.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: Crackatoa]
#26664206 - 05/11/20 10:30 AM (3 years, 8 months ago) |
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Thanks for the info guys.
So would this filter in the link be any better than the previous one i linked to that was $375 on ebay? This is the envirco brand, I just cant seem to figure out what the difference is between the two other than one has a higher CFM. https://www.ebay.com/itm/HEPA-Fan-filter-unit-FFU-230v-Fits-US-T-bar-2x4-UL-listed-Cleanroom-99-997/223187238611?hash=item33f6fefed3:g:GR4AAOSwiDFYQGmo
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Smartattack
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664278 - 05/11/20 11:14 AM (3 years, 8 months ago) |
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I considered one of those at one point in time. The overall design kind of put me off, not to mention the price and the fact that they NEVER seem to show a picture of the business end of the unit.
-------------------- * Smarts videos * Planet of the APES   I'm a fungal white supremacist.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: Smartattack]
#26664323 - 05/11/20 11:40 AM (3 years, 8 months ago) |
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https://www.envirco-hvac.com/products/index.aspx?prod=MAC10_Original
Here is all the info of the model that is most commonly sold on Ebay, ENVIRCO is the company that makes them.
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664396 - 05/11/20 12:15 PM (3 years, 8 months ago) |
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"I like the idea of a 4ft filter for a much larger working area. Bags are getting contaminated and its probably because I dont have a flow hood."
A flow hood is convenient to work in front of, but it is not going to solve your contamination problems. You should be able to work in a still box contamination free before building a hood.
What are you inoculating your bags with?
I buy my filters of Fungi Perfecti. They are a little more expensive but good filters. I wouldn't suggest buying a blower from them, they over priced.
The extra work space is very convienent, but you can do most anything in front of a small hood quite comfortably- even big spawn bags. I see lots of people building way bigger flow hoods than they really need for the amount of work they are doing. It's just something to think about when building a hood.
I actually just built a smaller hood (in my sig) - I built it so I can move it around , added a grate to the front to protect it. My older hood is in the screenshot below.
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Edited by mushpunx (05/11/20 05:32 PM)
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tripdawg420
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26664420 - 05/11/20 12:28 PM (3 years, 8 months ago) |
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ive allways wanted a flowhood
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Crackatoa
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Re: I need to buy a Flow Hood! HELP. [Re: tripdawg420]
#26664427 - 05/11/20 12:31 PM (3 years, 8 months ago) |
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You won't regret it.
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poisoned
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx] 1
#26664431 - 05/11/20 12:33 PM (3 years, 8 months ago) |
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Quote:
mushpunx said: A flow hood is convenient to work in front of, but it is not going to solve your contamination problems. You should be able to work in a still box contamination free before building a hood.
IDK, I feel it's a bit different with bags. Bags are way more suited for flowhoods than for SABs.
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tripdawg420
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Re: I need to buy a Flow Hood! HELP. [Re: poisoned] 1
#26664438 - 05/11/20 12:37 PM (3 years, 8 months ago) |
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the trick to doing bags in a sab is u have to have like 106 qt sab the bigger the better
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26664628 - 05/11/20 02:22 PM (3 years, 8 months ago) |
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So yours is 2ft wide and that is enough space for you to work comfortably?
Im innoculating with agar. sometimes grain to grain.
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Crackatoa
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26664640 - 05/11/20 02:31 PM (3 years, 8 months ago) |
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2 foot wide is good. I can G2G about 8 quarts in front of mine, before putting on lids and bringing more up to be wiped down. 12 is tall enough for G2G for me. If I did bags I would want a 24x24
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: Crackatoa]
#26664740 - 05/11/20 03:09 PM (3 years, 8 months ago) |
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I was using the 5 qt bags in a SAB but it became difficult using larger bags.
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: poisoned]
#26665057 - 05/11/20 05:56 PM (3 years, 8 months ago) |
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I agree that bags are more suited for flow hoods yes. But you should still be able to work with them in an SAB just fine - if you don't have enough space you just need a bigger SAB, or tilt the bag (I'm working bags in front of a 12 x 24).
Not owning a flow hood is not the reason for OP's contamination issues.
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rumfor69
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26665087 - 05/11/20 06:15 PM (3 years, 8 months ago) |
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Or use the SAB tall ways inserting hands from each side like in a hugging shape kinda
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Crackatoa
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Re: I need to buy a Flow Hood! HELP. [Re: rumfor69]
#26665089 - 05/11/20 06:17 PM (3 years, 8 months ago) |
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Smartattack
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Re: I need to buy a Flow Hood! HELP. [Re: Crackatoa] 1
#26665103 - 05/11/20 06:24 PM (3 years, 8 months ago) |
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Sorry I'm just being a dick.
-------------------- * Smarts videos * Planet of the APES   I'm a fungal white supremacist.
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rumfor69
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Re: I need to buy a Flow Hood! HELP. [Re: Smartattack] 1
#26665113 - 05/11/20 06:27 PM (3 years, 8 months ago) |
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lol
Love that setup
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: rumfor69]
#26665352 - 05/11/20 08:13 PM (3 years, 8 months ago) |
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I think the SAB I have is just not big enough. What type of contamination rates are you guys dealing with? I am aware the flow hood will not eliminate contam if my grain prep is not on point.
I usually always loose some bags, but I am still pretty new to this. Just got the 75x sterilizer it makes my life much easier.
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26665379 - 05/11/20 08:27 PM (3 years, 8 months ago) |
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Quote:
mycopiss said: I think the SAB I have is just not big enough. What type of contamination rates are you guys dealing with? I am aware the flow hood will not eliminate contam if my grain prep is not on point.
I usually always loose some bags, but I am still pretty new to this. Just got the 75x sterilizer it makes my life much easier.
A bigger SAB would make working with bags a whole lot easier. Typically if you are seeing bacteria or mold in your grain spawn, it's either your inoculant , or the contams are being introduced when you inoculate/G2G.
When I work with bags, even in front of the flow hood, I prefer to first inoculate quart grain masters with agar, and then G2G those into 4 or 5 qt bags (for a total of 5-6qts, one bag per tub).
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26665399 - 05/11/20 08:36 PM (3 years, 8 months ago) |
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Quote:
mycopiss said: So yours is 2ft wide and that is enough space for you to work comfortably?
Im innoculating with agar. sometimes grain to grain.
Oh yeah definitely. If you have the money and a permanent space then a wider hood is really nice if you do a whole lot of work. But I can get anything I need done in front of this quite comfortably. Even RR did all of his work in front of a 12 x 24
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26665908 - 05/12/20 07:20 AM (3 years, 8 months ago) |
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I would definitely like the larger setup, similar to smartattack's setup. Im going to use it in a small sealed room.
My SAB is definitely not tall enough, as the 18" tall bags hit the top of the SAB.
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26666092 - 05/12/20 09:07 AM (3 years, 8 months ago) |
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Quote:
mycopiss said: I would definitely like the larger setup, similar to smartattack's setup. Im going to use it in a small sealed room.
My SAB is definitely not tall enough, as the 18" tall bags hit the top of the SAB.
I worked with them in front of my 18" tall hood, and now in front of 12" tall. You should check out RR's Lets grow mushrooms videos, the one with spawn bags especially - he runs a gourmet mushroom farm using a 12 x 24" hood. It will work the same way with a still air box. You angle the bags instead of opening them straight up tall.
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Strainsfordaze


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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26666239 - 05/12/20 10:29 AM (3 years, 8 months ago) |
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Quote:
mushpunx said:
Quote:
mycopiss said: I would definitely like the larger setup, similar to smartattack's setup. Im going to use it in a small sealed room.
My SAB is definitely not tall enough, as the 18" tall bags hit the top of the SAB.
I worked with them in front of my 18" tall hood, and now in front of 12" tall. You should check out RR's Lets grow mushrooms videos, the one with spawn bags especially - he runs a gourmet mushroom farm using a 12 x 24" hood. It will work the same way with a still air box. You angle the bags instead of opening them straight up tall.
I’ve also been running spawn bags for years on my 12 x 24”. Just need to put them on their sides
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mushpunx
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Alternatively, and I've seen other members do this and I have is well , is set the FH on a table with drawer underneath (or a stool). You open the bag in the flow and set the bottom half in the drawer or on the stool. This way you have have it vertical to inoculate. The bottom half doesn't need to be in the flow so long as you keep the top several inches in it.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26692814 - 05/24/20 02:36 PM (3 years, 8 months ago) |
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So the manufacturer says they tested the air flow from this filter at 90FPM up to 30" From the filter. Does this mean that the clean working space up to 30" Out from the face of the filter?
Should I get a stainless steel table for working in front of the flow hood? Does the type of table make any difference? I was thinking about 30"x48" steel table, and a shelf behind it to hold the filter.
Im going with a fan Filter unit 4'x2' Brand new and has a Prefilter. I was considering using some clear acrylic to build walls and a top extending from the filter. Is there any recommendation on a specific material that may be better to use?
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Smartattack
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26693774 - 05/24/20 09:13 PM (3 years, 8 months ago) |
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Id suggest the following personally:
Don't work 30" away, I see no need for that.
Any cleanable surface will be good. If you got munjoy, spend on stainless I guess. Otherwise that formica laminated MDF is great and can be cut easily at home.
Clear acrylic (plexiglass) < Lexan
-------------------- * Smarts videos * Planet of the APES   I'm a fungal white supremacist.
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: Smartattack]
#26694788 - 05/25/20 11:43 AM (3 years, 8 months ago) |
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Should I Go with a 48" x 24" wide table?
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26696434 - 05/26/20 07:24 AM (3 years, 7 months ago) |
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You want to work as close to the filter as possible so you get the best flow and more importantly nothing comes between the filter face and your work (gloves especially) because it can blow contams right into your sterile media. Just use whatever table will hold it and gives you a foot or so in front. I like to use a piece of glass or plexiglass down on the table so it's easy to sanitizer.
You would want the table to be at least as wide as your filter , yes
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mushpunx
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26696450 - 05/26/20 07:34 AM (3 years, 7 months ago) |
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Do these have a poor flow rate or something? I know FP can be a bit sketch bit they say this about the FFU they sell:
"This unit can also function as a quiet and effective laminar flow hood for the laboratory environment. (Due to its relatively low air velocity [approximately 100 feet per minute], this unit should be used as a laminar flow hood in environments where there is already sufficient air filtration or treatment for general laboratory use; it is not suitable for this purpose in areas with a high airborne particle count.)"
Here's the page: https://fungi.com/products/self-contained-air-filtration-unit
They're saying you shouldn't really work with one of these without a clean lab?
With regular flow cabinets you wanna keep your space clean but you can run them in a room with carpet even if you apply good sterile technique, so I'm not really sure what the difference is?
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mycopiss
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26697793 - 05/26/20 07:20 PM (3 years, 7 months ago) |
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Another member posted about using the FFU and seems to have no problems with it.
A mushroom supply co. also uses FFU and says they are solid, So Im not too worried about it. Flow rate on mine is around 90FPM, 700CFM.
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Caps McGee
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26697896 - 05/26/20 08:00 PM (3 years, 7 months ago) |
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You can build one MUCH cheaper...
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mushhead
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Re: I need to buy a Flow Hood! HELP. [Re: Caps McGee]
#26698040 - 05/26/20 09:25 PM (3 years, 7 months ago) |
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So I'm looking to do the same thing, I have the expandable funds but can't build a flow hood due to lack of space. I know there's a $1100 flow hood out there I hear of but can't find it online. any help would be appreciated
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Crackatoa
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Re: I need to buy a Flow Hood! HELP. [Re: mushhead]
#26698048 - 05/26/20 09:31 PM (3 years, 7 months ago) |
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I think There's some 12x24 ones on etsy for under a grand. Can I say etsy?
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Smartattack
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Re: I need to buy a Flow Hood! HELP. [Re: mushpunx]
#26698050 - 05/26/20 09:31 PM (3 years, 7 months ago) |
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Quote:
mushpunx said: Do these have a poor flow rate or something? I know FP can be a bit sketch bit they say this about the FFU they sell:
"This unit can also function as a quiet and effective laminar flow hood for the laboratory environment. (Due to its relatively low air velocity [approximately 100 feet per minute], this unit should be used as a laminar flow hood in environments where there is already sufficient air filtration or treatment for general laboratory use; it is not suitable for this purpose in areas with a high airborne particle count.)"
Here's the page: https://fungi.com/products/self-contained-air-filtration-unit
They're saying you shouldn't really work with one of these without a clean lab?
With regular flow cabinets you wanna keep your space clean but you can run them in a room with carpet even if you apply good sterile technique, so I'm not really sure what the difference is?
Pretty sure you can run a flow hood in a dumpster just fine if not being an idiot about technique.
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mycopiss
Stranger
Registered: 06/01/19
Posts: 352
Last seen: 1 year, 9 months
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Re: I need to buy a Flow Hood! HELP. [Re: Smartattack]
#26740049 - 06/12/20 04:56 PM (3 years, 7 months ago) |
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Is it necessary to shower every time I work in front of the flow hood? and is face mask necessary? I get hot as fuck wearing that shit.
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Crackatoa
Stranger in a strange land



Registered: 03/31/19
Posts: 5,399
Loc: Over by your Mama's house
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26740124 - 06/12/20 05:21 PM (3 years, 7 months ago) |
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No, I never did with my SAB either.
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orange771
Registered: 01/26/11
Posts: 288
Last seen: 1 year, 7 months
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Re: I need to buy a Flow Hood! HELP. [Re: mycopiss]
#26913049 - 09/02/20 01:17 AM (3 years, 4 months ago) |
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What did you end up going with and how has it been working for you?
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