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OfflineTrippinRhino
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Registered: 03/24/01
Posts: 342
Loc: TX
Last seen: 11 years, 6 days
Re: On the Topic of fanning???
    #277979 - 03/25/01 04:36 AM (15 years, 9 months ago)

R U saying that I need to take off the top and fan fresh air into there or just leave the lid cracked?



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Invisibleotto i love ta get blotto
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Registered: 01/10/01
Posts: 112
Loc: colo
Re: On the Topic of fanning??? [Re: TrippinRhino]
    #278344 - 03/25/01 04:43 AM (15 years, 9 months ago)

i would seal it to keep humidity up and fan it twice a day. not only do high co2 levels slow shroom growth, they also encourage mold to grow.

"you cant kill me ,
im already dead"-Mudvayne


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Offlineemetheus
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Re: On the Topic of fanning??? [Re: otto i love ta get blotto]
    #278387 - 03/25/01 07:39 AM (15 years, 9 months ago)

co2 encourages mold ?
where did you read that ?

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InvisibleRussdogg
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Registered: 05/19/00
Posts: 188
Re: On the Topic of fanning??? [Re: emetheus]
    #278393 - 03/25/01 07:46 AM (15 years, 9 months ago)

stagnant air can introduce contams.



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Offlineemetheus
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Registered: 10/26/00
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Re: On the Topic of fanning??? [Re: Russdogg]
    #278395 - 03/25/01 07:50 AM (15 years, 9 months ago)

lol
contams come from spores and bacteria, not air.
no more present in nonmoving air than normal.
co2 doesn't make mold,
mold makes mold.

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OfflineEddie Walker
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Re: On the Topic of fanning??? [Re: emetheus]
    #278396 - 03/25/01 07:50 AM (15 years, 9 months ago)

Emetheus I read that stagnant air will promote contamination in The Mushroom Cultivator. Avalable at Fungi Perfecti.

Spores The Hawks Eye - Mycology Supplies Fungi Perfecti


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Offlineemetheus
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Re: On the Topic of fanning??? [Re: Eddie Walker]
    #278403 - 03/25/01 07:57 AM (15 years, 9 months ago)

be specific.
how long does it take for the air in a terrarium to go from ok to harmful ?
there's no need to fan cakes 4 or 5 times a day.
stagnant sterile air will cause zero contams since it is sterile.
and what does stagnant air have to do with the gentleman's assertion that co2 triggers higher than normal mold growth ?

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Invisibleotto i love ta get blotto
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Posts: 112
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Re: On the Topic of fanning??? [Re: emetheus]
    #278404 - 03/25/01 08:03 AM (15 years, 9 months ago)

i only told him to fan twice a day,
your right specifics boy, if there are no mold spores to begin with, the stagnant air wouldnt inspire them to do so, but the fact that hes even asking leads me to believe that his cakes could have exposure to mold spores.
sorry hippie, from now on ill try to think more like the guy who writes dictionaries when im posting.

"you cant kill me ,
im already dead"-Mudvayne


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OfflineEddie Walker
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Re: On the Topic of fanning??? [Re: otto i love ta get blotto]
    #278437 - 03/25/01 09:26 AM (15 years, 9 months ago)

The Mushroom Cultivator P. Stamets and J.S Chilton.
This is only a very very very small portion of the actual chapters on certain stages of development.

In reply to:

The Mushroom Cultivator "VIII. The Casing Layer" pg.135

Casing Colonization
Enviromental conditions after casing should be the same as during spawn running. Substrate temperatures are maintained within the optimum range for mycelial growth; relative humidity is 90-100%; fresh air is kept to a minimum.(Fresh air should only be introduced to offset overheating). The build-up of CO2 in the room is beneficial to mycelial growth and is controlled, a sheet of plastic should be placed over the casing, this plastic sheet prevents moisture loss from the casing.

Soon after casing, substrate temperatures surge upward due to the hampered diffusion of metabolic gases which would normally conduct heat away. This surge is an indication of mycelial vitality and is a positive sign if the room temperature can be controlled. This temperature rise can be anticipated by lowering either the temperature of the substrate prior to casing or lowering the air temperature of the room after casing.




Now of course that was all pre-pinning.

In reply to:

The Mushroom Cultivator "IX Strategies for mushroom formation (pinhead initiation)" pg.141

Stage II: Environmental Transition-The Prelude to Setting Primordia
Pinhead initiation techniques should begin when the mycelium reaches the valleys of the casing surface. Once the mycelium is clearly established in the valleys, the cultivator can begin the first steps leading to the setting of pinheads. Within this one to two day period, the
--1. Substrate and air temperatures are lowered to the fruiting range.
--2 The humidity is maintained at the 95% level.
--3 The carbon dioxide content of the room is reduced by the introduction of fresh air.
--4 The room is lighted on a 12 hour on/off cycle.




There is much more detail and it goes on and on. But we all know what to do at this point. Just keep fresh air coming in. Relative humidity should be droped to 85-92% after primordia formation (knotting).

There are distinct stages at which mycelia need different amounts of oxygen and humidity. It is all very critical. It is suprising any of us get it right after spending some time reading.

But then agian it would normaly be much simpler in nature. Dried poo and all laying about.

To be exact it says you need.
Spawn Run:
Relative Humiditiy: 90%.
Substrate Temperature: 84-86`F.
Duration: 10-14 days.
Co2: 5,000-10,000 ppm.
Fresh Air Exchanges: 0 per hour.
Light: darkness

Post Casing/Prepinning:
Relative Humiditiy: 90 + %.
Substrate Temperature: 84-86`F.
Duration: 5-10 days.
Co2: 5,000-10,000 ppm.
Fresh Air Exchanges: 0 per hour.
Light: darkness

Primordia Formation:
Relitive Humidity: 95-100%.
Air Temperature: 74-78`F.
Duration: 6-10 days.
Co2: less than 5,000 ppm.
Fresh Air Exchanges: 1-3 per hour
Light: Diffuse natural or exposure for 12-16 hours/day.

Cropping
Relitive Humidity: 85-92%
Air Temperature: 74-78
Flush Pattern: ever 5-8 days.
Co2: less than 5,000 ppm.
Fresh Air Exchanges: 1-3 per hour
Light: Diffuse natural or exposure for 12-16 hours/day.

Now those durations are only achieved with optimal enviromental conditions i.e. McMan's Cultivator or home made equivalent.

Spores The Hawks Eye - Mycology Supplies Fungi Perfecti


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Anonymous

Re: On the Topic of fanning??? [Re: otto i love ta get blotto]
    #278438 - 03/25/01 09:27 AM (15 years, 9 months ago)

Lack of fresh air causes a greenhouse effect.

I had this one job that kept me away from my shrooms for 12 hours at a time. I never had so many problems with mouldy mycellium. As soon as I was able to have them fanned every few hours, the problem went away.

I wish I could just fan the shroomery and get rid of some of the problems!

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OfflineEddie Walker
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Re: On the Topic of fanning??? [Re: ]
    #278460 - 03/25/01 10:11 AM (15 years, 9 months ago)

I had to pop this one to the top again. Can you belive how damn long my last post was.

I forgot to put what effect air flow has on contamination.
In reply to:

The Mushroom Cultivator P. Stamets and J.S Chilton. "Chapter XIII The Contaminants of Mushroom Culture" pg. 235

Molds and bacteria do not grow well in a climate specifically adjusted for mushrooms. Although both mushrooms and contaminations prefer humid conditions, the later thrive in prolonged stagnant air environments whereas mushrooms do not. The differences are frequently subtlte-amounting to only a few percentage points in relative humidity and slight adjustments to the air intake dampers in the growing room.

The contaiminants can be divided into two well defined groups. Those attacking the mushrooms are called pathogens while those competing for substrate are labeled indicators or competitors.(Mushroom pathogens are either molds, bacteria, viruses or pests; indicators are always fungi of some sort). In general, mushroom pathogens are not as numerous as the competitor molds, though they can be much more devastating.




As to when stagnant air goes from o.k. to bad. There are at least 33 different molds, bactiria and viruses listed in detail. Each one thriving in different enviroments with a huge variaty in appearence.

SporesThe Hawks Eye-Mycology SuppliesFungi Perfecti

Edited by Eddie Walker on 03/25/01 10:38 AM.



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InvisibleRussdogg
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Registered: 05/19/00
Posts: 188
Re: On the Topic of fanning??? [Re: Eddie Walker]
    #278514 - 03/25/01 03:25 PM (15 years, 9 months ago)

Hey you Hippie wanna-be.
How can you have sterile air? All air carries mold spores. Even Hepa is only 99.9% at removing contams.
So even if your fruiting chambers are not the most sterile places in the world. You can cut down on the number of those spores that germinate by increasing air exchange.





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OfflineShroomzilla
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Registered: 02/04/01
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Re: On the Topic of fanning??? [Re: Russdogg]
    #278888 - 03/25/01 11:13 PM (15 years, 9 months ago)

last time I had to go away from home for a day or two my casing went unventilated for about 36 hrs, I came back to a happy tray of cobweb mold. Previous to that it was fanned 2 times daily in addition to having a small air pump running during the day to stabilize the temp.



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