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OfflinePfffffff
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Monotub volume and hole size affects on conditions
    #11255139 - 10/15/09 08:09 PM (8 years, 2 months ago)

Ok so I'm trying to envision how the volume and hole size of a monotub would affect conditions inside the tub. A smaller volume should cause co2 to rise to unacceptable levels faster...is that a correct assersion?  And as for hole size, larger would allow more FAE but sacrifice humidity, whereas smaller holes would retain humidity but sacrificing co2...
Am I way off base here or what?  Found some cheap ass decent tall clear tubs that are 20 quart and trying to make a best educated guess as to how many/what size holes to bore out.  I would assume that due to a smaller volume inside it would be more critical than a larger tub (much like the salinity in a saltwater aquarium can jump/dive much faster than a larger one.

Thx in advance for any input!  Yal are the shit!


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InvisibleSlimz
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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11255155 - 10/15/09 08:12 PM (8 years, 2 months ago)

gas flows freely thru the holes.. your not gonna have CO2 backed up waiting to get out..


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: Slimz]
    #11255176 - 10/15/09 08:14 PM (8 years, 2 months ago)

If that is true I could just use like nickel size holes couldn't I?


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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11255187 - 10/15/09 08:15 PM (8 years, 2 months ago)

yes..


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: Slimz]
    #11255222 - 10/15/09 08:21 PM (8 years, 2 months ago)

Just out of curiosity why so many holes in a shotgun then?  Wouldn't just a couple holes be ok?  Not doubting you or anything just trying to understand how shit works when I can't see it lol...


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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11255230 - 10/15/09 08:21 PM (8 years, 2 months ago)

Its was to wick moisture off the perlite thats why so many holes


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Offlinedgls_jms
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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11255249 - 10/15/09 08:24 PM (8 years, 2 months ago)

I think location is the most important part of making holes in your tub. gotta be some right at the top of the sub and a couple at the top. I have more at sub level and a couple less up higher


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Re: Monotub volume and hole size affects on conditions [Re: Slimz]
    #11255259 - 10/15/09 08:26 PM (8 years, 2 months ago)

I've read that 1/4 inch holes are best. There's really no need to worry about co2 build up if you have enough holes drilled and you fan once or twice a day. Don't over complicate matters. You also don't need to worry so much about co2 unless you're growing oysters that give off more co2.

For accurate, reliable information, watch this video:

http://www.iplayerhd.com/player/4668b8fe-7c51-44cd-ac3d-1cb71528184f.aspx

And here's the text just in case if someone in the future searches this thread and the video is gone:

"Part 3 of the pf tek videos demonstrates how to build a small fruiting chamber, also known as a terrarium, using an inexpensive plastic tote that you’ll purchase locally. The purpose of the terrarium is to provide a semi-enclosed area of high humidity for fruiting your mushrooms. It’s extremely important to also have a means of fresh air entry to your terrarium to prevent stale air, which stimulates competitor molds such as the dreaded green meanie, Trichoderma, also known as the forest green mold.

You’ll observe in the video clip that we drill numerous small holes into all six sides of the terrarium. A ¼” (6mm) drill bit was used, and up to a few hundred holes will be drilled into larger terrariums. When completed, be certain to elevate the terrarium an inch or two above your shelf so that air can easily circulate under the unit. Empty ½ pint mason jars, blocks of wood or plastic, etc., can be used to place under your terrarium. If it’s a large terrarium, place a block or two under the center of it as well as under each of the four corners.

Once filled with well-drained perlite, this design will easily maintain upper 90% humidity levels while allowing for the air exchange that is necessary both as a pinning trigger, and also to keep air flowing, which reduces the incidence of contaminant molds.

For this terrarium to function properly, you’ll want to have an ambient humidity in your room of 50% or greater. If you live in a desert or very dry climate, you’ll want to run a small vaporizer or cool mist humidifier in the room your terrarium is located to raise the humidity to 50%.

Enjoy the video!
Marc R Keith"


Edited by po0dingles (10/15/09 08:33 PM)


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: po0dingles]
    #11255289 - 10/15/09 08:31 PM (8 years, 2 months ago)

Awesome thk u both for the info. I'm still trying to grasp so many concepts as the hobby is so unique. Definitely helps me out a lot, as is customary here. Many good folks with great insight...hopefully someday I too can be a Jedi master ;-)


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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11255751 - 10/15/09 09:50 PM (8 years, 2 months ago)

The more holes you have, the quicker you achieve a full air exchange. Which you want about 4 air exchanges per hour.


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Re: Monotub volume and hole size affects on conditions [Re: ambargh]
    #11255901 - 10/15/09 10:16 PM (8 years, 2 months ago)

If you bought a bunch of bins, why not do a few different designs and see which works best?  You could do one with the standard 8-10 polyfilled holes, you could do one with shotgun holes (starting above substrate level obviously) and do another experimental one?
We were having this discussion in a thread yeasterday, Don't get too sucked in to the standard 2" holes with polyfill in the standard locations.  Many different things can work well.  The standard design is proven though so if you're very worried about failing then just follow the straight tek.


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: tall dwarf]
    #11255995 - 10/15/09 10:29 PM (8 years, 2 months ago)

Well I probably will end up doing that.  I just try to avoid reinventing the wheel if I can.  I have a feeling either way I'll do fine if I'm sterile for the most part, just trying to increase my chances all I can by learning from what others have learned before me.

Can't wait til I get my first flush to post some pics of.  I'm a first time hobbyist...Waiting is hands down the hardest part of all this lol.


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Re: Monotub volume and hole size affects on conditions [Re: ambargh]
    #11256022 - 10/15/09 10:32 PM (8 years, 2 months ago)

Quote:

ambargh said:
The more holes you have, the quicker you achieve a full air exchange. Which you want about 4 air exchanges per hour.




Yes, but if you have too many, or the holes are too large, the tubs will not be able to hold humidity.


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Hydra Tek - A detailed guide, for newest to the most skilled cultivators.

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Re: Monotub volume and hole size affects on conditions [Re: dancefloordale]
    #11256056 - 10/15/09 10:38 PM (8 years, 2 months ago)

you have to find the "happy medium" between FAE and humidity.

it doesnt matter how many or what size holes you have cuz you can regulate both with your polyfill being packed tight or loose or somewhere in between. :stoned:

just make sure to have some at the substrate level. :super:



mine work great.:cool:


13:mushroom2:


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: 13shrooms]
    #11256094 - 10/15/09 10:42 PM (8 years, 2 months ago)

rockin!  can't thank yal enough!  i will undoubtedly post results...one of these days if anything progresses...


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Re: Monotub volume and hole size affects on conditions [Re: 13shrooms]
    #11256108 - 10/15/09 10:44 PM (8 years, 2 months ago)

Quote:

13shrooms said:
just make sure to have some at the substrate level. :super:




See I think thats overhyped.  I just did a monotub where I terribly mis-calculated the substrate level hole height, so the holes were like 2 or 3 inches above sub level and the results were damn good.  I'm about to drill more holes in the same tub, if I fuck it up I'll make another.


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Re: Monotub volume and hole size affects on conditions [Re: Pfffffff]
    #11256131 - 10/15/09 10:47 PM (8 years, 2 months ago)

Quote:

Pfffffff said:
rockin!  can't thank yal enough!  i will undoubtedly post results...one of these days if anything progresses...




awesome, post in the results in THIS thread so we can all see them!


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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: tall dwarf]
    #11256150 - 10/15/09 10:49 PM (8 years, 2 months ago)

lol ok i will...but it's gonna be a bit old by that time as i am just now starting to see some myc growth (and don't know wtf i'm doing just yet).  i've got some B+, GT, and PE at jar stage now.  just trying to take my time and get shit right.  so far so good, no obvious signs of contam or anything but like i said it's all jar stage.  i could fuck up a lot along the way!


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Re: Monotub volume and hole size affects on conditions [Re: dancefloordale]
    #11256223 - 10/15/09 10:59 PM (8 years, 2 months ago)

Quote:

dancefloordale said:
Quote:

ambargh said:
The more holes you have, the quicker you achieve a full air exchange. Which you want about 4 air exchanges per hour.




Yes, but if you have too many, or the holes are too large, the tubs will not be able to hold humidity.



True dat. From a solved problem arises a new one.


--------------------
"The fact that we live at the bottom of a deep gravity well, on the surface of a gas covered planet going around a nuclear fireball 90 million miles away and think this to be normal is obviously some indication of how skewed our perspective tends to be.." - Douglas Adams

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OfflinePfffffff
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Re: Monotub volume and hole size affects on conditions [Re: ambargh]
    #11256370 - 10/15/09 11:24 PM (8 years, 2 months ago)

Well if I get to the point to worry about this I'll feel accomplished already. Humidity has been like 60 or 70% lately. And I have lots of odd reptiles so raising humidity is not something foreign to me at all. Had a cool mist before ever even looking at this site.

The wait is killing me though!!!


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Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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