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Offlinemushroomnoob1981
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incubator or room temperature?
    #22398310 - 10/18/15 03:26 PM (8 years, 3 months ago)

So I have about 8 quarts of rye prepped, PC'd and inoculated.  I'm a bit concerned about the temperature in the apartment now that it's cold out.  My roommates want the thermostat set at 68°F to save money.  There is no getting around this... even offering to pay a higher % of the utilities won't solve this.

I've read that temperatures in the low 80s are optimal for cube growth:
http://www.shroomery.org/8484/What-are-the-optimum-P-cubensis-growth-parameters

So option A- grow them in the cupboard at 68°F and hope they grow.

Option B-  I built this incubator that's basically a 27 gallon tub with water on the bottom.  There's an aquarium heater and pump to circulate the water and the bottom is lined with bricks so that the stuff being incubated isn't submerged.  I also added a small amount of bleach to keep the water from becoming a breeding ground for contams. 

The thermometer says 80 °F in the incubator, which seems ideal, however I'm worried that the humidity would leech into my jars and wet the rye (the jar lids are covered with Tyvek with some polyfill for GE).

Any ideas as to which would be the better option?  Would covering the jars with aluminum foil help out with the incubator situation?

Thanks!


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InvisibleConvikt Kelly
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Re: incubator or room temperature? [Re: mushroomnoob1981]
    #22398610 - 10/18/15 04:34 PM (8 years, 3 months ago)

IMO stick em in the incubator and dont worry about moisture getting in the jars, I doubt a worrying amount will get in. Alternatively buy an electric space heater for your bedroom and keep the jars in there.


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Offlinethelivingfreekshow
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Re: incubator or room temperature? [Re: Convikt Kelly]
    #22398620 - 10/18/15 04:35 PM (8 years, 3 months ago)

68 deg is fine...Ive done well between 65-75


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OfflineMsMycelium
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Re: incubator or room temperature? [Re: mushroomnoob1981]
    #22398638 - 10/18/15 04:38 PM (8 years, 3 months ago)

I'm having heating issues as well, but a space heaters probably the best way to go from what I hear, just get them off the ground and keep an eye on their temp.  They would grow at 68 just a little slower is all, but thats not a bad temp.


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Offlinethelivingfreekshow
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Re: incubator or room temperature? [Re: MsMycelium]
    #22398660 - 10/18/15 04:43 PM (8 years, 3 months ago)

The jars themselves will produce internal heat as they coloinize, so dont get too crazy with the temps, if you use a heater.


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InvisibleMad Season
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Re: incubator or room temperature? [Re: thelivingfreekshow]
    #22398781 - 10/18/15 05:10 PM (8 years, 3 months ago)

Quote:

Mad Season said:
Quote:

RogerRabbit said:
I've been saying that for years.  My petri dish studies a few years ago showed that cubensis reaches peak linear growth between 75F and 80F, then is flat until 83F, where it starts to slow down.  Mycelium at 86F is growing at about 2/3 the speed of mycelium at 80F.  In addition, the higher temps tend to stimulate thermophic molds and bacteria.

There's LOT'S of good information in TMC, but that 86F figure is one of the errors.
RR



Quote:

RogerRabbit said:
It was all posted on the other board.  I don't know if the threads are still there or not.  Bottom line was the tubs that had petri dishes between 75F and 81F showed no difference in growth.  Below 75F, and above 81F growth slowed down, with a rapid drop in colonization speed below 70F and above 83F.  At 86F, a petri dish would be 2/3 colonized, while its sister at 75F would be fully colonized.  Rate of growth at 86F was exactly the same as rate of growth at 72F, with fastest growth as said, occurring between 75F and 81F.

Note that these tests were for linear growth in the two dimensional plane of a petri dish.  In three dimensonal space such as in grain jars or bulk substrates, the effects of thermogenesis need to be considered, so ambient temps should be lowered slightly to compensate.
RR




70-75 is the best for colonisation.

During colonisation there is no need to worry about humidity. It will have a filter for gas exchange that'll hold humidity down.

As for fruiting.. You want 99% SURFACE HUMIDITY. RELATIVE HUMIDITY ISNT IMPORTANT.

As seen here: http://www.shroomery.org/forums/remlinker.php?Cat=&Entry=149412&F_Board=2&Thread=21288129&Main=21288129

http://www.shroomery.org/forums/showflat.php/Number/22105120

Quote:

The thing to remember(which is something i find misunderstood) is that the most important humidity you have is surface humidity, in other words it really doesn't matter if your fc has a rh of 40% or 99% as long as there is room for evaporation to take place the humidity that is important sits on the surface.

This is our goal with every fruiting chamber we use is surface humidity, with our monotubs we dial them in to achieve this, with our sgfc's we mist as needed to achieve this, with our gh's we (depending on your set up)use something like an ultrasonic humidifier as a timed mister to achieve this because once we have this we can focus on fae which is a great tool for everything your substrate wants for many reasons, the more the better:super:

The reason we grow in a high humidity environment is simple, mushrooms have no skin and lose moisture to the environment very easily and if they lose more then is being pumped in they simply die. This is an easy fix just simply misting your fruits




There's also this, which is a good explanation:
Quote:

Air exchange is the number one pinning trigger.  Humidity is farther down the list.  Perhaps the number 2 pinning trigger is a loss of moisture from the substrate.  If you try to avoid misting by constantly pumping in wet air, you don't have a loss of moisture from the substrate and performance is poor.

You want constant air exchange, and then as the cake or other substrate dries out, you mist to replace the lost moisture.  This dry-wet cycle is a MAJOR pinning trigger. There is no automated system that can replace your eyeballs and mister.  I'm an electrical engineer by profession with a specialty in automation, so believe me when I say if the whole process could be automated, I'd have done it years ago.
RR




And last but not least what proper misting looks like: http://www.shroomery.org/forums/showflat.php/Number/21595437




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OfflineParafaragaramus
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Re: incubator or room temperature? [Re: Mad Season]
    #22398830 - 10/18/15 05:19 PM (8 years, 3 months ago)

I've always kept mine at about room temp although I think around last winter my heater was going out and for about a week they spent a lot of their time in the low 60's maybe even in the 50's. while colonization slowed down a lot as soon as I got a heater and kept them closer to 70's they sped up and I ended up having a great flush. They're hardy nonetheless. It's mostly for the speed. If you want them done faster I'd shoot for an incubator but I wouldn't go as high as 80. The highest I'd go is probably 75


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OfflineDrCrumbs
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Re: incubator or room temperature? [Re: Parafaragaramus]
    #22398930 - 10/18/15 05:39 PM (8 years, 3 months ago)

Room temp


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OfflineSmoothcat
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Re: incubator or room temperature? [Re: DrCrumbs]
    #22399852 - 10/18/15 08:05 PM (8 years, 3 months ago)

I put mine in the airing cupboard above the hot water tank, the hot water came on twice a day keeping the temp in the cupboard between 68f and 79f, seemed to work for me :smile:


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