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Grizzly Adams
Stranger
Registered: 10/12/09
Posts: 139
Last seen: 3 years, 9 months
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fresh air
#11291244 - 10/21/09 11:04 AM (14 years, 5 months ago) |
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During myclium growth is it necessary regardless if incubation is in a jar, bottle, or bag. for fresh air to make its way into the container?
i've read a lot about how some people will screw their jars on all the way until your cake is birthed and i have also read that people will turn the caps on the jars 1/4 of a turn or even secure a wet paper towel or cheese cloth over the jar instead of a lid.
if it is true that mycelium need fresh air, how would one go about doing this in bags?
it seems that if any air got in it would be at risk for contamination.
i may just be missing the whole point of "air exchange"
can someone elaborate?
Edited by Grizzly Adams (10/21/09 11:06 AM)
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nastos
secret secretions
Registered: 06/15/09
Posts: 7,371
Last seen: 5 years, 9 months
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all mycelium need gas exchange for proper growth. usually done with a hole filled with polyfill or covered in tyvek or some sort of suitable filter. mycelium in a sealed jar or bag with no means of gas exchange will surely stall and contam. it would be like suffocating it.
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nastos
secret secretions
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Posts: 7,371
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Re: fresh air [Re: nastos]
#11291315 - 10/21/09 11:19 AM (14 years, 5 months ago) |
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p.s.
cheese cloth and paper towels are NOT suitable filters for mushroom cultivation.
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dstark
Manifesting Minds
Registered: 02/27/08
Posts: 4,144
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Re: fresh air [Re: nastos]
#11291373 - 10/21/09 11:30 AM (14 years, 5 months ago) |
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Gas exchange is when the myc. uses O2 and emits CO2 - he always need a supply of O2 so he can keep living, that why you must have hole in jar, the filter is for not letting any other unwanted organisms- contams, get it together with air on your substrate and grow there.
-------------------- What is a mind, if not something to be messed with? What is consciousness, if not a state to be altered? ~I Feelat Home~
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WildRover
On and off again
Registered: 09/11/06
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Loc: SE USA
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Re: fresh air [Re: nastos]
#11291395 - 10/21/09 11:36 AM (14 years, 5 months ago) |
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I successfully did my first PF-TEK with autoclave tape over the inoculation holes. Did it go as fast as it could have with those holes open? I don't know, but it worked.
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nastos
secret secretions
Registered: 06/15/09
Posts: 7,371
Last seen: 5 years, 9 months
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autoclave tape? i would assume was pourous and allowed for GE minimal probably. i use micro pore over my jars to prevent nasty gnats that like to lay eggs in jars from time to time. pf jars do not require tape tho. the dry verm layer proves as good a filter as any
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feelfunny
I am you
Registered: 03/11/09
Posts: 8,747
Loc: South
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sometimes just because something works 1 time dose not make it a good idea. i can drive with my dick deose that mean i should??
-------------------- IF A CAT AND DOG CAN GET ALONG WHY CANT EVERYONE ELSE? If the sky is falling, don't look up! Feel Family Founder. me if you are tired of hearing, "Use the search function".
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dstark
Manifesting Minds
Registered: 02/27/08
Posts: 4,144
Last seen: 7 months, 29 days
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You can buy the micropore tape for about 1-2$ And dont understand me wrong, there should be holes but with some kind of filter.
-------------------- What is a mind, if not something to be messed with? What is consciousness, if not a state to be altered? ~I Feelat Home~
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feelfunny
I am you
Registered: 03/11/09
Posts: 8,747
Loc: South
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Re: fresh air [Re: dstark]
#11291527 - 10/21/09 11:57 AM (14 years, 5 months ago) |
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not for PF tek. i have never had the holes coverd and not had a problem. granted i only did it 3 or 4 times till i moved to grain
-------------------- IF A CAT AND DOG CAN GET ALONG WHY CANT EVERYONE ELSE? If the sky is falling, don't look up! Feel Family Founder. me if you are tired of hearing, "Use the search function".
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nastos
secret secretions
Registered: 06/15/09
Posts: 7,371
Last seen: 5 years, 9 months
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Quote:
feelfunny said: sometimes just because something works 1 time dose not make it a good idea. i can drive with my dick deose that mean i should??
can u really drive w/ your dick? if so i think you should do it all the time.. alot of people would pay good money to see something like that.
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WildRover
On and off again
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Loc: SE USA
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Re: fresh air [Re: nastos]
#11291682 - 10/21/09 12:20 PM (14 years, 5 months ago) |
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Quote:
nastos said: autoclave tape? i would assume was pourous and allowed for GE minimal probably. i use micro pore over my jars to prevent nasty gnats that like to lay eggs in jars from time to time. pf jars do not require tape tho. the dry verm layer proves as good a filter as any
Yeah, it may have been somewhat porous. Autoclave indicator tape is like super sticky masking tape, so I don't know. And I never said it was a good idea, or that I'd recommend it, but I also tend to think that growing is more forgiving than many people realize. Since going to grain, I've layered Tyvek over holes in the lid.
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Grizzly Adams
Stranger
Registered: 10/12/09
Posts: 139
Last seen: 3 years, 9 months
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micropore tape is what? like medical tape?
with a bag of 3 cups of substrate what would be a good size hole to put in the bag?
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feelfunny
I am you
Registered: 03/11/09
Posts: 8,747
Loc: South
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you should be useing a filter patch bag
-------------------- IF A CAT AND DOG CAN GET ALONG WHY CANT EVERYONE ELSE? If the sky is falling, don't look up! Feel Family Founder. me if you are tired of hearing, "Use the search function".
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