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InvisibleAyrios
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80-92% humidity for casing - is more really worse
    #3210675 - 10/03/04 07:46 PM (12 years, 8 months ago)

Most people seem to say casings require a little less humidity than cakes. What is the result of 95-98% humidity on casings? Is this just a rumor that took off that casings really prefer less humidity? I've seen some posts that state 95-98% is great for casings but the majority seems to think just a tad lower is ideal.

What do you use for your high yields? There's a lot of variance in figures out there. Maybe we can establish the bottom line :wink:


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Offlinepshawny
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Re: 80-92% humidity for casing - is more really worse [Re: Ayrios]
    #3210700 - 10/03/04 07:55 PM (12 years, 8 months ago)

bump, good ?


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OfflineBioSore
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3210707 - 10/03/04 07:57 PM (12 years, 8 months ago)

Well, the main reason for requiring a lower humudity is because the casing starts to rot if it is too humid. I'm doing my first casing ATM (hasn't even pinned yet) so I can't say anything out of experience, but that seems to be the consensus thusfar.


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If you dont like my fire, then dont come around, cause' I'm gonna burn one down.


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InvisibleAyrios
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Re: 80-92% humidity for casing - is more really wo [Re: BioSore]
    #3211266 - 10/03/04 10:45 PM (12 years, 8 months ago)

Cool, but let's see if we can get some additional opinions. I believe I've heard of some good growers on here who subject their casings to ~98%.


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InvisibleSubGen1us
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3211296 - 10/03/04 10:50 PM (12 years, 8 months ago)

Cakes have nothing to get water from except the air around them, Hence the high humidity needed.
casings hold water themselves so dont need that high humidity after pinning.

100% humidity for pinning. Thats is for cakes and casings.
Drop humidity for casings after u see pins or they may become very fuzzy.


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InvisibleATWAR
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3211854 - 10/04/04 12:46 AM (12 years, 8 months ago)

It is the transpiration of water to the surface of the casing as a result of evaporation why lower humidity is better. When humidity is too high, the added benefit of this mechanism is lost, thus lowering potential water/nutrient movement through the casing to the surface where the mushrooms need it. Higher humidity will not cause the casing to rot. I have found it is much better to lower humidity shortly after pins develop than to leave them "in the fog".


Potential yields may suffer slightly from too much humidity. Basically you end up with fuzzy, juicy mushrooms. With too little humdity you end up with small, dense mushrooms but yield will also suffer far worse than that of too much Rh...


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InvisibleAyrios
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Re: 80-92% humidity for casing - is more really wo [Re: ATWAR]
    #3211883 - 10/04/04 12:52 AM (12 years, 8 months ago)

Cool, I think I'll shovel out a bit of perlite a couple days after I put it in the chamber.


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Offlinehyphae
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3214348 - 10/04/04 04:50 PM (12 years, 8 months ago)

Reguardless cakes or casings IMHO this is basic myco 101 casings may provide moisture because of the moist casing layer but they also transpire and when the flush bolts they suck up a ton of water so keeping that casing at "near saturation" will help tremendously from depleting your substrates moisture which results in excess shrinkage and will reduce your flushes yields over time.


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Getting the most out of your casings!, A pinning strategy.
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"We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"


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Offlinescatmanrav
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3215625 - 10/04/04 09:48 PM (12 years, 8 months ago)

I keep mine high but it does drop at times. I'd rather have to much humidity then to little and I think most experienced growers agree with that. I probably do keep mine higher then most. Well not really my closets pretty good but I think I mist to much, thats where I get alot of humidity. I'm just afraid they always look to dry. I dunno but it works ok for me. I may not get perfect flushes but I do ok like this.


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"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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OfflineCubieman420
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Re: 80-92% humidity for casing - is more really wo [Re: scatmanrav]
    #3216260 - 10/05/04 12:25 AM (12 years, 8 months ago)

I thought that the idea was to have your RH around 98-100 while the casing colonizes, then drop humidity down to around 90 when you add light and air exchange to induce pinning.


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Offlinescatmanrav
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Re: 80-92% humidity for casing - is more really wo [Re: Ayrios]
    #3217818 - 10/05/04 01:00 PM (12 years, 8 months ago)

That seems to be the idea to get this thing called transpiration that these experienced people are talking about. Actually ATWAR mentioned she drops humidity right after pins form so maybe this is the time to drop down to 85-90% a bit.

I still keep mine high. I'm trying hard not to baby them cause I know I can do more harm then good by spoiling them with all this humidity but its just so hard cause I know they like water.. I have been spraying less the last week :smile:


--------------------
"life is like a drop of rain getting closer and closer to falling into a lake, and then when you hit the lake there is no more rain drop, only the lake."

Growing with bags, start to finish (including my new grain and substrate prep)
Anyone looking to start bulk tubs/mono tubs/shotgun hybrids? Good tubs to use..
How I do grain (old still good tips)
Turn your closet into a fruiting chamber
Casing layer colonization and overlay


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Invisibleno-tone
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Re: 80-92% humidity for casing - is more really wo [Re: ATWAR]
    #4121147 - 05/01/05 11:46 PM (12 years, 1 month ago)

Transpiration is what plants do, not mushrooms.

Plants use evaporation from stomata into the air to drag water up from the root system through the vascular tissue. Ahh the miracle of water and hydrogen bonding. They use the difference in potential by diffusion from high water content to low (soil-->air). THis is possible by way of a waxy cuticle that does not allow the diffusion through it. The plant acts as a wick basically.

Fungi do not do this. All the hyphae have moving cytoplasm between cells, there is absolutely no problem with the translocation of nutrients in fungi. Fungi do not have cuticles and thus cannot use this wicking system. THe cuticle and vascular tissue are what make the system work in plants.

Just my two cents!


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Man thinks. God laughs. - Jewish Proverb


Edited by no-tone (05/02/05 01:43 PM)


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OfflineBlue Helix
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Re: 80-92% humidity for casing - is more really worse [Re: Ayrios]
    #4121748 - 05/02/05 02:51 AM (12 years, 1 month ago)

If you never have trouble with green mold or aren't using peat moss, I say keep it as high as you want. Personally, on peat moss-based casing, I almost always get green mold if I don't drop the humidity. It strikes after the second flush with 100% RH most of the time.


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Offlinedicktar2000
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Re: 80-92% humidity for casing - is more really worse [Re: Blue Helix]
    #4123757 - 05/02/05 04:40 PM (12 years, 1 month ago)

With my latest batch, I got tired of hygrometers that didn't work and I decided to test the rumors on this board that there is nothing so bad about 100% RH. I have fogged out my latest batch of cases and the result has been phenomenal. Shrooms everywhere.

On the other hand, just today I threw out a whole casing, shrooms and all, because of black funk. More humidity means more risk of contam.


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