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Offlinevikingsc
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Re: Changed terrarium, now having trouble [Re: lil_demented]
    #19477567 - 01/26/14 04:22 PM (10 years, 11 months ago)

If the walls of the terrarium are still heavily misted by the time you come back to mist again your RH should be fine.

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InvisiblebodhisattaMDiscordReddit
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Re: Changed terrarium, now having trouble [Re: bodhisatta]
    #19477608 - 01/26/14 04:30 PM (10 years, 11 months ago)

Co2 doesn't sink in a SGFC it diffuses into the air, it's a homogeneous mix of gasses in the SGFC's air.

Quote:

bodhisatta said:
Quote:

ToadKnowledge said:
ahh ok the blowing air might be a factor. I have a heater inside of the closet I'm growing it in and it's facing the chamber.

When I mist and fan the temp drops and humidity decreases.




the heater will dry your shit out in no time. The only kind of heater you can really have with a SGFC is the oil filled radiator otherwise it will dry it all out. Even with the radiator it shouldn't be close to the SGFC at all. Take a look at the first link in my signature and read the Fruiting chamber,FAE,RH,misting and fanning parts.

Your cheap hygrometer probably doesn't read humidity accurately at all so I would ignore the readings you get. The only hygrometers accurate enough for a reasonable amount of money are calibrateable analog cigar box ones and synthetic hair ones.



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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: vikingsc]
    #19477676 - 01/26/14 04:45 PM (10 years, 11 months ago)

Ok, that seems like the next thing. I'll wait a see what happens.

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OfflineQuexl
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Re: Changed terrarium, now having trouble [Re: bodhisatta]
    #19477746 - 01/26/14 05:06 PM (10 years, 11 months ago)

Quote:

bodhisatta said:
Co2 doesn't sink in a SGFC it diffuses into the air, it's a homogeneous mix of gasses in the SGFC's air.




Who keeps saying that? CO2 is around 60% heavier than atmosphere by volume, and there's no dispersive force in there to suspend gasses of significantly different density. If it "diffuses"(yes) = passive transport(yes) = CO2 sinking(yes?).

:mob: <-me

But seriously, this is off topic. PM if you want. :smile:


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InvisiblebodhisattaMDiscordReddit
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Re: Changed terrarium, now having trouble [Re: Quexl]
    #19477809 - 01/26/14 05:19 PM (10 years, 11 months ago)

surprizingly if you get your hands on a co2 meter the PPM of co2 is higher at the roof of the SGFC than at the perlite level, explain that with the heavier than air theory. Every brewery I have ever been in has their co2 airlocks for 6200+ gal fermentation tanks making thousands of cubic feet of co2 per hour and it doesn't kill anyone ever from sinking to the ground and suffocating even with doors closed and the AC/heat off.

Quote:

The physics of the shotgun terrarium are that evaporation causes a temperature drop, thus the air molecules are closer together.  This results in higher pressure within the air spaces around the perlite.

The substrates and/or lights provide slight heating within the body of the terrarium.  This results in relatively lower pressure.  This low pressure area above the perlite(high pressure) results in airflow to balance the pressure.  This in turn leads to more evaporation from the perlite, continuing the process.  This is why a shotgun terrarium handles FAE automatically.

The CO2 does not settle to the bottom.  In addition, the CO2 from mushrooms is mixed thoroughly into the O2, thus it travels out through the holes in the sides and top as part of the natural circulation.  It doesn't enter the denser air within the perlite and spill out the bottom.
RR



Quote:

RogerRabbit said:
Quote:

JayBrasco said:
fewer, you dont want alot of humidity to escape. only enough on the BOTTOM to get rid of CO2




Bad advice.  Fresh air exchange causes a loss of moisture from the cakes or other substrate, and this loss of moisture is the number ONE pinning trigger.  Noobs worry too much about humidity, which is easily corrected with misting.  You MUST mist to make up for the lost moisture.  In the old days, people would toss cakes in a sealed up chamber and hope for a couple of mushrooms before green mold set in.  Today, you can easily get three or four times the harvest the early growers did by using a proper terrarium that provides both fresh air and high humidity.

Furthermore, why you guys think CO2 is heavy like water and will drain out holes in the bottom baffles the mind.  If all the CO2 settled to the bottom, we'd all be dead due to the power plants and cars, cows, etc., that are puking out tons of CO2 by the minute.  The CO2 MIXES with the air and thus must be exchanged WITH the air.  It isn't a sweet little layer on the bottom of your fruiting chambers.

As for only reading 80% humidity in a shotgun terrarium with a humidifier running in the closet, it proves your hygrometer is screwed.  I can put a shotgun terrarium in an open room with the lid totally off and get higher humidity than that.

I seriously doubt anyone has lower humidity than I do.  It's below zero outside and I use a large cast iron wood stove to heat my cabin.  My properly made shotgun terrariums all read 95% or greater.  I keep a cool mist humidifier running near the wood stove, and it's nice and cozy in here, even though there's nearly five feet of snow on the ground outside.
RR



Co2's concentration in "air" is higher at sea level but it's still mixed evenly with the air. Yes gravity does work but it doesn't pull co2 out of the air to make it it's own distinct layer.

Edited by Trusted cuItivator (01/26/14 05:32 PM)

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Offlinevikingsc
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Re: Changed terrarium, now having trouble [Re: Quexl]
    #19477849 - 01/26/14 05:31 PM (10 years, 11 months ago)

Quote:

Quexl said:
Quote:

bodhisatta said:
Co2 doesn't sink in a SGFC it diffuses into the air, it's a homogeneous mix of gasses in the SGFC's air.




Who keeps saying that? CO2 is around 60% heavier than atmosphere by volume, and there's no dispersive force in there to suspend gasses of significantly different density. If it "diffuses"(yes) = passive transport(yes) = CO2 sinking(yes?).

:mob: <-me

But seriously, this is off topic. PM if you want. :smile:



:whathesaid:
Despite CO2 supposedly being heavier than O2 it doesn't behave the way you'd think it would. There are people on here like rr that own expensive CO2 sensors and like Bodhisatta said they will fight you to the death over that argument of the CO2 sinking to the bottom.

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OfflinePussyFart
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Re: Changed terrarium, now having trouble [Re: vikingsc]
    #19477863 - 01/26/14 05:35 PM (10 years, 11 months ago)

Quote:

RogerRabbit said:
CO2 is not like water which remains separate from air and will drain out the bottom.  The CO2 MIXES WITH THE AIR, thus does not 'leak out the bottom'.

Before you tell us to go to science class(I have two engineering degrees-do you?), you should go back to second grade to learn the difference between a whole and a hole.
RR



http://www.shroomery.org/forums/showflat.php/Number/16180683#16180683

Quote:

RogerRabbit said:
Of course CO2 is heavier than air.  It doesn't however fall out of the air to land on the ground. A hole in the bottom of a terrarium isn't going to drain the CO2 out and leave air in its place.
RR



http://www.shroomery.org/forums/showflat.php/Number/13149063#13149063

Quote:

RogerRabbit said:
According to my CO2 meter, far more CO2 is expelled out the top and sides than the bottom.  CO2 isn't heavy like water, so it doesn't just 'drain' out. Instead, it mixes with the air that comes in, and then flows out mostly through the sides, but also the top due to turbulence caused by the design, which takes advantage of minute pressure differences caused by temperature(evaporative cooling within the perlite).

The bottom of a shotgun terrarium is the 'intake', so if there's no holes there, you will have lower humidity and a higher CO2 level because less air is coming in to the terrarium to push the CO2 and stale air out the sides and top.
RR



http://www.shroomery.org/forums/showflat.php/Number/14406744#14406744



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Offlinevikingsc
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Re: Changed terrarium, now having trouble [Re: PussyFart]
    #19477932 - 01/26/14 05:57 PM (10 years, 11 months ago)

:whathesaid:

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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: vikingsc]
    #19477964 - 01/26/14 06:08 PM (10 years, 11 months ago)

hmm, now it's back down to 80%. I'm not sure, I think I might just go back to the glass tank. When I was doing the switch my thermometer fell on one of the mushrooms that was growing and completely hacked it off the cake. I was devastated and took it out and put it inside of a napkin. I pressed it and it was hard. Are they suppose to be hard?

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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19477975 - 01/26/14 06:12 PM (10 years, 11 months ago)

Quote:

ToadKnowledge said:
hmm, now it's back down to 80%. I'm not sure, I think I might just go back to the glass tank. When I was doing the switch my thermometer fell on one of the mushrooms that was growing and completely hacked it off the cake. I was devastated and took it out and put it inside of a napkin. I pressed it and it was hard. Are they suppose to be hard?



just wait it out and leave them in the better chamber. And no they're supposed to be eaten :lol:, yes somewhat hard.

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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: bodhisatta]
    #19477987 - 01/26/14 06:14 PM (10 years, 11 months ago)

hmm idk dude. It's now at 70%

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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19477996 - 01/26/14 06:15 PM (10 years, 11 months ago)

don't trust your meter, especially after 1 hour. is your perlite hydrated through and through also?

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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: bodhisatta]
    #19478008 - 01/26/14 06:17 PM (10 years, 11 months ago)

The perlite did concern me. I bought new perlite today and the texture of the perlite was very different from the last bag I bought. In the first bag I bought the perlite absorb a lot of water but this bag it was mad rocky and the water didn't absorb at all. I'm guessing that could also be the problem?

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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19478014 - 01/26/14 06:18 PM (10 years, 11 months ago)

perlite is a rock it shouldn't absorb at all. It clings to the surface of the rocks. you want the coarse stuff or the coarsest you can find as long as it's not huge.

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Re: Changed terrarium, now having trouble [Re: bodhisatta]
    #19478034 - 01/26/14 06:23 PM (10 years, 11 months ago)

oh because in the last bag, when i wet it the texture completely changed

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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19478051 - 01/26/14 06:26 PM (10 years, 11 months ago)

Ok so, what exactly are the consequences of changing them back to the glass terrarium, if the conditions were perfect before?

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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19478094 - 01/26/14 06:38 PM (10 years, 11 months ago)

Quote:

ToadKnowledge said:
oh because in the last bag, when i wet it the texture completely changed



sounds like it was vermiculite, perlite is bright white and a rock it stays a rock when it gets wet.

consequences are poor yield and ugly fruits :shrug:

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Re: Changed terrarium, now having trouble [Re: vikingsc]
    #19478536 - 01/26/14 07:28 PM (10 years, 11 months ago)

Quote:

Quexl said:
:mob: <-me





Still disagree, have a degree, & use a gas meter for confined SE. :smile:


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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: Quexl]
    #19478651 - 01/26/14 07:58 PM (10 years, 11 months ago)

Have you ever personally used a glass terrarium? Are you speaking from experience or just saying that it'll fruit poorly?

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OfflineToadKnowledge
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Re: Changed terrarium, now having trouble [Re: ToadKnowledge]
    #19478745 - 01/26/14 08:20 PM (10 years, 11 months ago)

and no it was perlite lol

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