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OfflineGreenRabbit
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Gypsum: Did I get the right kinds? How much to add?
    #21789744 - 06/10/15 06:48 PM (8 years, 7 months ago)

I am making a monotub using 5 pf cakes. So far I've been successful in making monotubs with cakes but have never used gypsum. I just wanted to make sure that this is the right kind and that I am adding an appropriate amount.

For 5 cakes I think half a brick of coir will work. I just eyeball vermiculite and add it in last. I think a small handful will be fine, does the amount here look reasonable?

I plan to make this a 3" thick and about 10" X 20".



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Invisible2shoes
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21789770 - 06/10/15 06:53 PM (8 years, 7 months ago)

I hear lawn gypsum works..

My gypsum is white and powdered but I paid a lot for mine :shrug:

I hear drywall "dust" and plaster of paris after it has hardened and crushed up..


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OfflineMonkeyJesusFresco
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: 2shoes]
    #21789797 - 06/10/15 06:57 PM (8 years, 7 months ago)

Nah, just toss plaster into and mix thoroughly into moistened bulk before pasteurization:super:


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OfflineGreenRabbit
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: MonkeyJesusFresco]
    #21789846 - 06/10/15 07:05 PM (8 years, 7 months ago)

Quote:

MonkeyJesusFresco said:
Nah, just toss plaster into and mix thoroughly into moistened bulk before pasteurization:super:




What? are you saying don't use this? It was the only kind I could find that wasn't mixed into other fertilizers. Plaster? What do you mean?

This is just Calcium Sulfate. Isn't that the whole point of adding gypsum in the first place?


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OfflineMonkeyJesusFresco
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21789927 - 06/10/15 07:22 PM (8 years, 7 months ago)

ha! nah man, I was just responding to the previous poster; I dunno nuth'n 'bout your type of gypsum;

I use plaster of paris; add it to my pre-moistened bulk then pasteurize

I've never bought straight up gypsum before;

plaster of paris, when wet turns into gypsum.

sorry about the miscommunication :shrug:


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OfflineGreenRabbit
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: MonkeyJesusFresco]
    #21790020 - 06/10/15 07:41 PM (8 years, 7 months ago)

Quote:

MonkeyJesusFresco said:
ha! nah man, I was just responding to the previous poster; I dunno nuth'n 'bout your type of gypsum;

I use plaster of paris; add it to my pre-moistened bulk then pasteurize

I've never bought straight up gypsum before;

plaster of paris, when wet turns into gypsum.

sorry about the miscommunication :shrug:





No worries, I'm about to throw it in... I'm not pasteurizing, it seems unnecessary, I've been successful with unpasteurized coir. I have coir/verm ready to go, can anyone confirm the amount?

I set that handful aside, I'm about to throw it in.


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Invisible2shoes
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21790076 - 06/10/15 07:58 PM (8 years, 7 months ago)

I'd say use it and post results :shrug:

My guess is that it will work great..


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OfflineMonkeyJesusFresco
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: 2shoes]
    #21790123 - 06/10/15 08:07 PM (8 years, 7 months ago)

5% by volume? es wut eye doo


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OfflineShroominMe
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: MonkeyJesusFresco]
    #21791270 - 06/11/15 01:00 AM (8 years, 7 months ago)

I've used plaster of Paris and powdered selenite with success.

Wikipedia:

Gypsum plaster, or plaster of Paris, is produced by heating gypsum to about 300 °F (150 °C)

CaSO4·2H2O + heat → CaSO4·0.5H2O + 1.5H2O (released as steam).
When the dry plaster powder is mixed with water, it re-forms into gypsum


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OfflineGreenRabbit
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: ShroominMe]
    #21792572 - 06/11/15 11:07 AM (8 years, 7 months ago)

Are you saying I should cook my pelletized gypsum?


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OfflinecronicrFacebook
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21792574 - 06/11/15 11:07 AM (8 years, 7 months ago)

no need to


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

It doesn't matter what i think of you...all that matters is clean spawn

I'm tired do me a favor


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OfflineGreenRabbit
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: cronicr]
    #21792597 - 06/11/15 11:17 AM (8 years, 7 months ago)

Yea I didn't think so...

I bought a 50lb bag of this pelletized gypsum... It was the only size they had.

Cron, does the amount I added seem appropriate for a monotub? Also, there are no issues with this pelletized gypsum right?


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OfflineMandarinfish

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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21792684 - 06/11/15 11:44 AM (8 years, 7 months ago)

.


Edited by Mandarinfish (07/15/20 10:44 PM)


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OfflinePinPornProducer
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: GreenRabbit]
    #21792725 - 06/11/15 11:58 AM (8 years, 7 months ago)

I use the pellet gypsum, works fine


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OfflineGreenRabbit
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Re: Gypsum: Did I get the right kinds? How much to add? [Re: PinPornProducer]
    #21792847 - 06/11/15 12:37 PM (8 years, 7 months ago)

Quote:

PinPornProducer said:
I use the pellet gypsum, works fine




All I wanted to hear  :cool:
I'll post results


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