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Amazon Shop: Calcium Carbonate, Coir, Oyster Shell, Peat, pH Test Strips, Vermiculite

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Offlinedefthreat
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Oyster Shells?
    #1091667 - 11/27/02 07:18 PM (15 years, 5 months ago)

Can you use crushed oyster shells instead of hydrated lime or are the shells just used as a ph buffer?


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Offlineshirley knott
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Re: Oyster Shells? [Re: defthreat]
    #1091818 - 11/27/02 08:17 PM (15 years, 5 months ago)

Sorry to be a fellow newbie, and not an expert answering this, but i know how frustrating it is to get no responses, so...

peat is very acidic, i.e. pH 3-4, so you can bring it back to neutral for a good casing with any alkaline substance, and preferably one that retains the ability to soak up spare protons (H+ ions, what makes an acid an acid) and so acts over a long period. It seems from my reading that oyster shells alone can do the job, but you're even better off with a 'quick-acting' alkiliniser like lime or even pure powdered Calcium Carbonate as well. If you can get hold of some pH testing strips, or litmus paper, you'd do well - try to keep the pH between 6.5 and 8 to avoid problems, ie. fairly neutral.

If you can't get either, you can case with pure vermiculite, or with coco coir (sold in pet shops) with the same effect.



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Anonymous

Re: Oyster Shells? [Re: defthreat]
    #1091869 - 11/27/02 08:36 PM (15 years, 5 months ago)

What are your intentions for the Lime/Shells?


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Offlineupupup
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Re: Oyster Shells? [Re: ]
    #1092567 - 11/28/02 12:36 AM (15 years, 5 months ago)

Supposedly the crushed oyster shells will provide the neccisary adjustments to the ph, however, 50/50+ tek still calls for a bit of lime though I think way too damn much...

My id uses both...


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OfflineDERRAYLD
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Re: Oyster Shells? [Re: upupup]
    #1092647 - 11/28/02 01:02 AM (15 years, 5 months ago)

Yes oyster shell is perfect for buffering the ph of your casing.
I always make a mixture of coco coir, vermiculite and oyster shell.


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Amazon Shop: Calcium Carbonate, Coir, Oyster Shell, Peat, pH Test Strips, Vermiculite

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

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