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OfflineNostic
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Pmp vs SGFC experiment.
    #13925313 - 02/08/11 12:41 AM (13 years, 10 days ago)

I have practically spent days and days reading up on this forum and learned substantial bit about mushroom cultivation. The knowledge I gained here has got me to the stage where I have six beautiful BRF cakes of the Thai strain.

I am now at the point of fruiting and was reading up on FC types. I was amazed by the conflicting views people have between the PMP and SG fruiting chambers.

This got me to set up both chambers and test them for my self.

The PMP is a 60L tub with a 9500 Regent adjustable air pump with twin outlets. In the bottom I have a 30cm airstone and a 75cm air curtain. In the bottom is fish tank gravel to a depth of 10cm and water to a depth of 7cm. A plastic rack was placed in the tub to elevate the cakes 5 cm off the gravel. The air pump is running at 3/4 output. The RH reading is at 98%. The top has four air outlets of the same diameter of the two inlet tubes. This chamber will not be fanned.

The shotgun FC is also a 60L tub set up to spec. The RH is also at 98%. Misting will done four times a day and fanning will be done six times a day.(feel free to recommend different)

The light source is a 6400K flourescent bulb on a 12/12 cycle.

The six BRF cakes was dunked for 24 hours and rolled with sterilized dry verm. Three cakes was placed in each fruiting camber.

Progress will be updated and pictures will follow.

Peace


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Offlinek00laid
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Re: Pmp vs SGFC experiment. [Re: Nostic]
    #13925348 - 02/08/11 12:49 AM (13 years, 10 days ago)

should be interesting.

hopefully the results are substantial enough that we might be able to overlook the spores role in it


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OfflineNostic
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Re: Pmp vs SGFC experiment. [Re: k00laid]
    #13925634 - 02/08/11 02:41 AM (13 years, 10 days ago)

Quote:

k00laid said:
should be interesting.

hopefully the results are substantial enough that we might be able to overlook the spores role in it




I did use a MS syringe for inoculation. That is why I use 3 cakes in each fruiting chamber so that we can make a reasonably fair judgement.


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OfflineMasticore
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Re: Pmp vs SGFC experiment. [Re: Nostic]
    #13925658 - 02/08/11 02:52 AM (13 years, 10 days ago)

:popcorn:

This should be a good one.


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OfflineRogerRabbitM
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Re: Pmp vs SGFC experiment. [Re: Masticore]
    #13926318 - 02/08/11 08:50 AM (13 years, 10 days ago)

Quote:

The shotgun FC is also a 60L tub set up to spec. The RH is also at 98%. Misting will done four times a day and fanning will be done six times a day.(feel free to recommend different)





If the shotgun terrarium is set up correctly and elevated, you don't need to fan at all.  Most of us do when we mist, but don't consider it mandatory.  Three cakes in a 60L terrarium isn't much.  Your experiment would be better with a dozen or so cakes in each one.
RR


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OfflineSomeGuy
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Re: Pmp vs SGFC experiment. [Re: RogerRabbit]
    #13926447 - 02/08/11 09:20 AM (13 years, 10 days ago)

That's a bad-ass pmp! If the s/g even comes anywhere close than it's the winner because it cost 1/4 the price. I didn't know it was a contest:shrug:


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Offlinechains


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Re: Pmp vs SGFC experiment. [Re: SomeGuy]
    #13926465 - 02/08/11 09:29 AM (13 years, 10 days ago)

thats why i prefer shotgun cus im a cheap ass lol


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OfflineSomeGuy
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Re: Pmp vs SGFC experiment. [Re: chains]
    #13926481 - 02/08/11 09:34 AM (13 years, 10 days ago)

in the land of f/c's, you get what you pay for;
1. shot-gun
2. pmp
3. a humidifier set-up
4. 2 humidifiers, and timers
    what am I forgetting?


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OfflineNostic
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Re: Pmp vs SGFC experiment. [Re: SomeGuy]
    #13937901 - 02/10/11 03:51 AM (13 years, 8 days ago)

The results so is as far is as follows. Definite and surprising difference between the two set ups. The three cakes in the shot gun FC has started pinning. the pinning is scattered with a cluster of four pins on one cake.(must say, I have not expected pinning so soon)

The cakes in the PMP however is a different story. Only one pin detected so far. With one of the other cakes, something strange is happening. It has three mutant like blobs on top and has mycelium reaching out into the air.

I tested the temperature  inside each FC and found the pmp to be two degrees centigrade hotter that the SGFC. I think it is caused by the air that is pumped into the pmp being heated up by the air pump. We are in late summer and the temperature in the pmp is 86F in the day and 78F at night.
So far the shot gun FC seems to be preforming better than the PMP.

I would have liked to have posted some nice pictures but the digital microscope I ordered has not arrived yet.

More updates will follow.
Peace.  :restless:


Edited by Nostic (02/10/11 08:06 AM)


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Offlinejb4789
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Re: Pmp vs SGFC experiment. [Re: Nostic]
    #13949716 - 02/12/11 03:03 AM (13 years, 6 days ago)

I am trying to decide between the 2 i have 5 jars almost ready to fruit. Plz update asap.


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OfflineNostic
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Re: Pmp vs SGFC experiment. [Re: jb4789]
    #13950779 - 02/12/11 11:40 AM (13 years, 6 days ago)

The difference between the SGFC and PMP is quite remarkable. The cakes in the SGFC is doing much better than the cakes in the pmp. The cakes in the pmp does not have as many pins and as large as the pmp. Further more, one of the cakes in the pmp seems to be producing mutants.(Hopefully I will receive my camera before harvest to take pics) One of the other cakes in the pmp, has only started producing pins yesterday.

The shotgun FC is definitely the best FC to go for when starting up in mycology. It is very simple and effective. Further more, the SGFC teaches you the needs of fruiting bodies. It is very important to understand this as a first time grower.

The problems with the pmp, I think, is not enough FAE. The RH in the pmp will also remain constant. This does not happen in nature. Also not in the SGFC and the fruiting bodies just seems happier with these fluctuations. This might even be one of the factors to speed up pinning.

I will post the difference in yield after the first flush.

Regards
JC


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