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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: QM33]
    #27464250 - 09/11/21 02:04 PM (2 years, 6 months ago)

The cooker cooling too quickly will definitely pop bags. Its the pressure trying to equalize too quickly. Same reason youll pop bags if u take tge rocker off mid cycle.

Youll have a hard time getting a reading on the cooker with a temp gun.  The reflective surface will reflect the laser and youll most likely get something close to room temp


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weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

Edited by TedsDead (09/11/21 02:09 PM)

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InvisibleQM33
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464281 - 09/11/21 02:20 PM (2 years, 6 months ago)

I don't get how that's physically possible. But I'll agree until I can prove it differently.

Maybe I could put some black paint on a section to get a reading...



Also it melts at 360 or lower... I think it's totally in the realm of possibility the bottom of a PC can get this hot just from the element, and more specifically the lowest already right above the water line.

Idk I was going to do a temp check on Monday, but good thing I didn't because of the reflective deal, maybe I can mediate that

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InvisibleMunchauzen
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Re: Cultivation General Discussion [Re: QM33]
    #27464284 - 09/11/21 02:23 PM (2 years, 6 months ago)

yeah every time I've popped bags, its after turning the heat off. last time it happened was just around 12.5 psi, so only a few minutes after cutting the heat.

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OnlineA.k.aM
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464289 - 09/11/21 02:26 PM (2 years, 6 months ago)

My favorite are the sites that have each variety rated in like 15 categories.

“Visuals, empathy, philosophical,” etc.


It’s quickly turning into the new trendy drug ripe for bullshitting, just like medical weed in California 20 years ago with all the new strains and names. So many people would only smoke whatever popular strain was going around at the time. Never thought I’d see label whores in the drug scene :facepalm:


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LAGM2020

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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: Munchauzen]
    #27464290 - 09/11/21 02:27 PM (2 years, 6 months ago)

I had a bag expand and clog the vent once after cutting the heat.  ended up blowing the overpressure plug.  it was not a fun mess to clean up.  it had been off for at least 20 minutes before it happened


I dont think measuring the temp on the outside of the cooker will give you an accurate idea of whats going on inside.  u need a thermocouple


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

Edited by TedsDead (09/11/21 02:32 PM)

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InvisibleMunchauzen
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464295 - 09/11/21 02:31 PM (2 years, 6 months ago)

ooo somebody I talked to didn't use a plate on top and I tried it once, thats a good reason to keep the plate on top

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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: Munchauzen]
    #27464299 - 09/11/21 02:32 PM (2 years, 6 months ago)

yeah, I just had the rack ontop but the wire type one not the one with the little holes in it like I normally use


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

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InvisibleQM33
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Re: Cultivation General Discussion [Re: Munchauzen]
    #27464304 - 09/11/21 02:37 PM (2 years, 6 months ago)

Quote:

Munchauzen said:
yeah every time I've popped bags, its after turning the heat off. last time it happened was just around 12.5 psi, so only a few minutes after cutting the heat.




How would you know? Don't get me wrong, I can smell pretty quickly if a bag pops and grains start to really cook. But you smelt it or..?

Ya I defibetly think the plate is necessary,  I wish I could understand the physics behind it expanding during cooldown...


Maybe that's it and it only pops them sometime. Idk I guess I'll focus on that also, haven't had many popped lately, but really trying to make it a zero.

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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: QM33]
    #27464310 - 09/11/21 02:42 PM (2 years, 6 months ago)

if it was because of the temp being too hot on the bottom of the cooker then we would all be popping bags all the time


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

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InvisibleQM33
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464312 - 09/11/21 02:44 PM (2 years, 6 months ago)

I feel it, I just feel like I'm cramming it too much, even tho I think others cram it more. I'll keep yall posted. Thanks.

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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: QM33]
    #27464315 - 09/11/21 02:46 PM (2 years, 6 months ago)

its not cramming it enough that will lead to popping


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

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OfflineSmoothcat
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464317 - 09/11/21 02:48 PM (2 years, 6 months ago)

Ok well it’s master mix inside I’m at 12.5psi on the cool down now…

Im gonna give it a blast with the heat and try and bring it down slowly

I’ve got plates an shit in there…I’m not worried about space an that

I basically followed natedogs Instructions here


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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: Smoothcat]
    #27464337 - 09/11/21 03:05 PM (2 years, 6 months ago)

let us know how they turn out


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

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OfflineSmoothcat
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Re: Cultivation General Discussion [Re: TedsDead]
    #27464361 - 09/11/21 03:22 PM (2 years, 6 months ago)

Well I’m not opening the pc till tomorrow but I’ve got a feeling they’re gonna be ok  :pirate:


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OfflineBrownBear
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Re: Cultivation General Discussion [Re: Smoothcat]
    #27464520 - 09/11/21 05:06 PM (2 years, 6 months ago)

I have noticed popped bags when I don't let the pc cool enough before opening. I noticed that even when the pressure gauge reaches 0 psi that if I remove the rocker on my 921 or open the control valve on my 75x too fast when the pc is still hot I end up with popped bags. I now bleed it slowly everytime and popped bags have become non existent.

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Invisiblesandman420
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Re: Cultivation General Discussion [Re: BrownBear] * 1
    #27464542 - 09/11/21 05:26 PM (2 years, 6 months ago)

Bags popping is simple.

They pop because they are over 212f when exposed to atmosphere and the water inside must be steam vapor by basic physics.

With no pressure inside the cooker to press back against the bags they will expand and pop like a mini pressure cooker inside a pressure cooker.

The bags have a thermal mass so if you drop the pressure inside very fast they are still over waters critical temperature. It is actually a form of Boiling Liquid Expanding Vapor explosion, just not a cool one.

https://en.wikipedia.org/wiki/Boiling_liquid_expanding_vapor_explosion

There are three key elements causing a BLEVE:[3]

  • A substance in liquid form at a temperature above its normal atmospheric pressure boiling point.
  • A containment vessel maintaining the pressure that keeps the substance in liquid form.
  • A sudden loss of containment that rapidly drops the pressure.


If you dropped 15psi steam pressure instantaneously (e.g. removed the lid) nearly every drop of water inside the cooker would flash into steam vapor and rock your world because water does not like to be 250f in atmosphere, that is supercritical. That makes it a little easier to understand I think. What's happening to the bags popping is just like that but less cool.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

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InvisibleQM33
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Re: Cultivation General Discussion [Re: sandman420]
    #27464549 - 09/11/21 05:33 PM (2 years, 6 months ago)

Dude I'm way to high to comprehend that right now. But I'm saving this. Bless you.

Your last paragraph is easy to comprehend, I'm going to read the link completely tomorrow probably ha

Edited by QM33 (09/11/21 05:35 PM)

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Invisiblesandman420
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Re: Cultivation General Discussion [Re: QM33]
    #27464557 - 09/11/21 05:37 PM (2 years, 6 months ago)

I'm also way to high to explain it properly lmao I did a bad job. But it's cause the bags are over their boiling point and expand, just a too fast cool down thing.

I do not pack my cooker tight or put anything over my bags and never ever pop anything except in those conditions. And you might say I do a couple bags



each layer has its own rack they are not stacked.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Edited by sandman420 (09/11/21 05:39 PM)

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InvisibleTedsDead
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Re: Cultivation General Discussion [Re: sandman420] * 1
    #27464565 - 09/11/21 05:42 PM (2 years, 6 months ago)

Thank you!  Exactly what sandman said.  I wasnt gonna type all that on my phone tho.


--------------------
weed gets you through times of no money better than money gets you through times of no weed...  -the fabulous furry freak bros
If you can buy it, you can burn it!



https://www.shroomery.org/forums/showflat.php/Number/25947396#25947396

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InvisibleMunchauzen
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Re: Cultivation General Discussion [Re: QM33]
    #27464581 - 09/11/21 05:59 PM (2 years, 6 months ago)

Quote:

QM33 said:
Quote:

Munchauzen said:
yeah every time I've popped bags, its after turning the heat off. last time it happened was just around 12.5 psi, so only a few minutes after cutting the heat.




How would you know? Don't get me wrong, I can smell pretty quickly if a bag pops and grains start to really cook. But you smelt it or..?

Ya I defibetly think the plate is necessary,  I wish I could understand the physics behind it expanding during cooldown...


Maybe that's it and it only pops them sometime. Idk I guess I'll focus on that also, haven't had many popped lately, but really trying to make it a zero.



You can hear them pop like a balloon.

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