Home | Community | Message Board

Cannabis Seeds UK
This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Shop: Original Sensible Seeds Bulk Cannabis Seeds   Mushroom-Hut Substrate Mix   North Spore Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies

Jump to first unread post Pages: 1
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone)
    #27037089 - 11/13/20 01:33 PM (3 years, 2 months ago)

Gypsum: Declumps grain spawn, is a source of calcium and sulfur for mycelium and is a pH buffer.

Limestone: Is a long term pH increasing agent, a long term buffer compared to gypsum (what does that even mean?) provides better form to casings.

Hydrated lime: Instantly provides a basic pH of your liking.

What am I missing? Is gypsum or limestone a stronger buffer? Some cultivators report that gypsum doesn't do much for them but RR used to say a decade ago that gypsum is indeed a pH buffer, albeit it doesn't provide pH upswings like limestone does.

Limestone on the other hand, does increase the pH but on a longer timescale than hydrated lime. How does it do that increase?

Help me settle this once and for all. Thanks.


Edited by Phony Phone (11/13/20 01:42 PM)


Extras: Filter Print Post Top
InvisiblebodhisattaMDiscordReddit
Smurf real estate agent
 User Gallery
Folding@home Statistics
Registered: 04/30/13
Posts: 61,889
Loc: Milky way
Trusted Cultivator
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: Phony Phone]
    #27037200 - 11/13/20 02:34 PM (3 years, 2 months ago)

Gypsum doesn't act as a buffer and is very poorly soluble


Extras: Filter Print Post Top
OfflineAtmozFear
just a shade of myself
Male

Registered: 01/25/19
Posts: 1,032
Last seen: 1 day, 14 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: bodhisatta]
    #27037313 - 11/13/20 03:57 PM (3 years, 2 months ago)

Quote:

bodhisatta said:
Gypsum doesn't act as a buffer and is very poorly soluble



Huh... you’re right bod, just googled it... I thought it directly buffered ph, but really it just makes better use and raises efficiency of the preexisting ph (my words, not google’s... just my understanding, tell me if I’m wrong) :takingnotes:


--------------------


Extras: Filter Print Post Top
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: bodhisatta]
    #27037324 - 11/13/20 04:04 PM (3 years, 2 months ago)

What does it do then besides what was stated in the OP?⁵

Also
Quote:

RogerRabbit said:
Quote:

and the gypsum buffers it from metabolites that would increase the pH over time.




Almost.  The metabolites want to decrease pH, as in lower it.  The gypsum tends to keep pH stable.
RR




Rr says it buffers. Im confused.


Extras: Filter Print Post Top
OfflineAtmozFear
just a shade of myself
Male

Registered: 01/25/19
Posts: 1,032
Last seen: 1 day, 14 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: Phony Phone]
    #27037329 - 11/13/20 04:08 PM (3 years, 2 months ago)

provides sulfur for one thing... calcium too but I think more people use it for the sulfur- I know I do with plants (not suggesting there’s any similarity) :shrug:


--------------------


Extras: Filter Print Post Top
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: AtmozFear]
    #27037338 - 11/13/20 04:17 PM (3 years, 2 months ago)

Yeah.. kinda confused with RR's old posts though

Quote:

rogerrabbit said:

Gypsum is not used as a pH buffer, but regardless, it's water soluble so the granulated works fine, and it should be added to casing layers.

Hydrated lime is best for adjusting the pH of peat.  If you don't bring the pH up, trichoderma will grow on the uncolonized parts.
RR




Extras: Filter Print Post Top
OfflineAtmozFear
just a shade of myself
Male

Registered: 01/25/19
Posts: 1,032
Last seen: 1 day, 14 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: Phony Phone]
    #27037352 - 11/13/20 04:24 PM (3 years, 2 months ago)

My god a lot of that is wrong and reckless- can’t believe a veteran said all that  :um:

Gypsum is absolutely not water soluble, in fact if you mix the shit out of it in water it will just precipitate to the bottom :facepalm3:


--------------------


Extras: Filter Print Post Top
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: AtmozFear]
    #27037355 - 11/13/20 04:26 PM (3 years, 2 months ago)

Ye ik. Tbh most of it is over a decade old but here is more...

Quote:

RogerRabbit said:
I don't know about jiffy mix, but hydrated lime generally IS calcium carbonate or equivalent.  It is not a buffer.  It will raise the ph.  A buffer is used to resist changes in ph.  An excellent buffer is gypsum.  For peat based casings, I add 1/2 tablespoon of hydrated lime per cup of peat in the mix.  Don't count the verm when figuring out how much lime to use.  For coir(which I hate as a casing material) use half that amount.
RR




Extras: Filter Print Post Top
OfflineAtmozFear
just a shade of myself
Male

Registered: 01/25/19
Posts: 1,032
Last seen: 1 day, 14 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: Phony Phone]
    #27037361 - 11/13/20 04:28 PM (3 years, 2 months ago)

Wow I will just stick to bod n pasty :eatingout:


--------------------


Extras: Filter Print Post Top
InvisiblebodhisattaMDiscordReddit
Smurf real estate agent
 User Gallery
Folding@home Statistics
Registered: 04/30/13
Posts: 61,889
Loc: Milky way
Trusted Cultivator
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: AtmozFear] * 1
    #27037362 - 11/13/20 04:31 PM (3 years, 2 months ago)

Im sure I've been dead wrong about a few things. RR is dead wrong about gypsum but he grew up with encyclopedia not wikipedia or Google

Gypsum isn't soluble enough to buffer pH


Extras: Filter Print Post Top
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: bodhisatta]
    #27046839 - 11/19/20 07:50 AM (3 years, 2 months ago)

then what does gypsum do? :shrug:


Extras: Filter Print Post Top
InvisiblebodhisattaMDiscordReddit
Smurf real estate agent
 User Gallery
Folding@home Statistics
Registered: 04/30/13
Posts: 61,889
Loc: Milky way
Trusted Cultivator
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: Phony Phone]
    #27046872 - 11/19/20 08:13 AM (3 years, 2 months ago)

Supplies calcium and sulfur and keeps grains from sticking. Basically you can skip it


Extras: Filter Print Post Top
OfflinePhony Phone

Registered: 09/19/20
Posts: 612
Last seen: 5 days, 16 hours
Re: Let's settle this once and for all. Calcium Carbonate + Calcium Sulfate (Gypsum, Limestone) [Re: bodhisatta]
    #27047347 - 11/19/20 01:26 PM (3 years, 2 months ago)

why was the myth of ph buffering of gypsum and ph stabilization so widespread back then?
tbh i still see the use in CVG as a sulfur and calcium supplement so its still going there


Extras: Filter Print Post Top
Jump to top Pages: 1

Shop: Original Sensible Seeds Bulk Cannabis Seeds   Mushroom-Hut Substrate Mix   North Spore Injection Grain Bag, North Spore Mushroom Grow Kits & Cultivation Supplies


Similar ThreadsPosterViewsRepliesLast post
* Calcium carbonate and gypsum volume FGL 2,716 9 02/10/07 12:43 PM
by FGL
* Finally Got some Lime, calcium carbonate and gypsum !!! javtfs 1,062 2 09/15/07 02:47 PM
by Bob_Dole
* Gypsum, Limestone, Oyster shell. Demetri 3,459 8 02/16/08 10:11 AM
by dumbfounded1600
* No pH probe/hydrated lime. 50/50+ using only calcium carbonate? Alprazolom 2,531 6 11/06/06 06:07 PM
by Alprazolom
* calcium carbonate online? Primate 2,120 8 09/12/06 10:01 PM
by Lost_
* Will "Crushed Coral" work in place of crushed oyster shells / calcium carbonate? (Pics)
( 1 2 all )
AnonymousNewbie 4,342 24 12/18/04 03:22 PM
by AnonymousNewbie
* Calcium Carbonate Substitute? Enki 1,166 3 10/02/06 02:48 PM
by Enki
* no calcium carb. or gypsum in caseing mix? mango man 457 9 06/25/09 12:27 PM
by Cyber

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: Shroomism, george castanza, RogerRabbit, veggie, mushboy, fahtster, LogicaL Chaos, 13shrooms, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a
1,057 topic views. 21 members, 205 guests and 54 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.023 seconds spending 0.007 seconds on 12 queries.