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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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How long does Calcium carbonate take to modify pH?
    #7362203 -

Since I'm waiting for some jars to colonize, I decided I'd practice making 50/50+ casing mix. Since I don't want to buy 50 pounds of hydrated lime, I picked up some calci-sand at my pet store, which is ground up calcium carbonate.

I did a litmus paper before, and 1 hour after adding the calci-sand (10% by volume), and the pH remained at 6.

i know calci-sand is better as a long term buffer, but I didn't know how long it took to affect the pH.


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Re: How long does Calcium carbonate take to modify pH? [Re: FalseMaria]
    #7362587 -

sorry, I didn't really ask a question there did I?

How long should it take to see a pH change?


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Re: How long does Calcium carbonate take to modify pH? [Re: FalseMaria]
    #7362861 -

Add another ten percent gypsum and it should jump up to 6.8 or so. If you want it much higher than that, it takes hydrated lime. Since a casings life is measured in weeks, not months, you don't need a long term buffer. You need short term pH correction. That's why I recommend hydrated lime and gypsum. The correction is immediate.
RR


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Re: How long does Calcium carbonate take to modify pH? [Re: RogerRabbit]
    #7363865 -

Gypsum won't be a problem. I just really didn't want to buy 50 pounds of the hydrated lime. What to do, what to do...

Is there any reason we can't add baking soda to the casing? After doing some tests to make sure the litmus paper was ok, I remembered about how base the baking soda was. It uped the pH immediately. Can I use that or is there a reason I can't.


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Re: How long does Calcium carbonate take to modify pH? [Re: FalseMaria]
    #7363882 -

y would u have to buy 50 lbs of hydrated lime? dont you have a local garden center. i bought like a 2-3 lb bag there for 6$ and it will last me FOR LIFE!!!

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Re: How long does Calcium carbonate take to modify pH? [Re: blood4blood]
    #7363889 -

In many parts of the world where the soil is naturally sweet, it will be very hard to find lime. You can order hydrated lime online. Check our vendors. I'm pretty sure a few have it. If not, you can order it from best hardware. Just do a search for hydrated lime when you get to their site. Be sure to use 'horticultural' hydrated lime, not the stuff for concrete or steel work. www.doitbest.com

You can't use baking soda. The salt is toxic to fungi.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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Re: How long does Calcium carbonate take to modify pH? *DELETED* [Re: RogerRabbit]
    #7363940 -

Post deleted by spock1

Reason for deletion: .


Edited by spock1 (09/03/07 09:53 AM)

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Re: How long does Calcium carbonate take to modify pH? [Re: spock1]
    #7363945 -

mmm... minty mushrooms. :drooling:


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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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