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OfflineMartinsapin
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Registered: 09/12/16
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Calculating FAE rate for an oyster GH
    #26893443 - 08/22/20 12:00 PM (3 years, 5 months ago)

So, my oysters need more fresh air. Im gonna install an air intake fan.

Ive read that post http://https://www.shroomery.org/forums/showflat.php/Number/21683115#21683115

Very instructive.

Im growing mainly oyster and if I follow Stamets recommendations they should get 4-8 air exchange per hour.

My GH is 11x20x8 which make 1760 cubic feet
1760 X 6 (lets say I aim to get 6 air exchange per hour) = 10560
10560 / 60minutes = 176 cfm

Thats for an empty room

So I guess Ill get an fan in the range of 220 cfm because prefilter and ducting angle will reduce the cfm as I understood.

Is my calculation correct ?


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OfflineSHROOMSISAY01M
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Registered: 01/22/17
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Loc: Virginia, USA
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Re: Calculating FAE rate for an oyster GH [Re: Martinsapin]
    #26897967 - 08/24/20 11:35 PM (3 years, 5 months ago)

No need to filter the air coming in.


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OfflineMartinsapin
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Re: Calculating FAE rate for an oyster GH [Re: SHROOMSISAY01]
    #26898268 - 08/25/20 07:31 AM (3 years, 5 months ago)

Ive seen some people do it thats why.

Ive ordered a 520 cfm 8" fan with a speed controller.

The GH is filling and the stem gets elongated more and more, even though Ive completly openned the door.


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OfflineSHROOMSISAY01M
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Registered: 01/22/17
Posts: 3,849
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Re: Calculating FAE rate for an oyster GH [Re: Martinsapin]
    #26898582 - 08/25/20 11:43 AM (3 years, 5 months ago)

Yea many people do unnecessary things especially in this field. You might want to think about your set up if it is in your house. I doubt it is but realizes you will be pushing the spores out into the surrounding area around your grow. This is why most people chose to use negative pressure for the fruiting room and positive pressure for the lab. The set up you are doing is positive pressure which may be fine for you.

You can not have too much FAE for oysters so that fan will work well.


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OfflineMartinsapin
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Registered: 09/12/16
Posts: 310
Loc: Canada Flag
Last seen: 1 year, 7 months
Re: Calculating FAE rate for an oyster GH [Re: SHROOMSISAY01]
    #26898682 - 08/25/20 12:31 PM (3 years, 5 months ago)

yeah the set up is outside

thanks


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