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Shop: Original Seeds Store Buy CBD, Compare CBD   Amazon ½ Pint Jars, Calcium Carbonate, Gypsum, Oyster Shell, Paul Stamets, Peat, pH Test Strips, Rye Grain

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OfflineMycoJunkie
Psilanthropist

Registered: 11/04/04
Posts: 963
Loc: .4merica
Last seen: 11 years, 5 months
Gypsum as casing buffer...
    #3569095 - 01/01/05 10:57 PM (12 years, 5 months ago)


I have some plaster of paris, which I hear is mostly Gypsum. However, it has no ingredients label, so I dunno.

Anyway, could I use Gypsum in place of hydrated lime?


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Offlinescatmanrav
Brainy Smurf

Registered: 05/08/04
Posts: 11,483
Loc: Flag
Last seen: 4 years, 5 months
Trusted Cultivator
Re: Gypsum as casing buffer... [Re: MycoJunkie]
    #3569879 - 01/02/05 03:33 AM (12 years, 5 months ago)

No.

Theres info in the FAQ's on what you can use (calc carb, chalk, crushed oyster shells, crushed eggshells, ect).


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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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OfflineMushroomFriend
Vargen ska fanleva!!
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Registered: 10/12/04
Posts: 4,055
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Re: Gypsum as casing buffer... [Re: scatmanrav]
    #3570213 - 01/02/05 07:44 AM (12 years, 5 months ago)

It CAN be used in compost, dont know whatfor but I guess for PH purposes.
Looks like suitable for casing too then. IMHNO. :wink:


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Offlinegsmith
reformed lurker
Registered: 12/07/04
Posts: 204
Last seen: 11 years, 6 months
Re: Gypsum as casing buffer... [Re: MushroomFriend]
    #3574536 - 01/03/05 11:02 AM (12 years, 5 months ago)

gypsum is calcium sulfate, not carbonate. you can use a little bit when prepping rye jars apparently to keep the kernels from sticking together. haven't tried this so I don't know how well it works. When gardening in soil, it does buffer PH in relatively the same way as CaCO3. I don't know how well it works in casing though.


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InvisibleArp
roving mycophagist
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Registered: 04/20/98
Posts: 2,191
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Re: Gypsum as casing buffer... [Re: gsmith]
    #3778648 - 02/14/05 03:49 PM (12 years, 4 months ago)

According to GG&MM by Stamets a casing mix can be 10 parts Peat, 1 part chalk and 1 part gypsum.

Quote:

Gypsum, calcium sulfate, may affect pH by 1/2 of a point.
Its pH-altering ability is minor until the sulphur evolves into
sulfuric acid. Calcium and sulphur are essential elements in
mushroom metabolic processes. If the substrate is lacking in these
essential elements, yields are adversely affected.




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Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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