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Mushroom-Hut Shop: Substrate Mix

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Invisibleroquet
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calcium hydroxide ok for 50/50?
    #7191216 - 07/18/07 02:10 AM (16 years, 7 months ago)

I've got some 70% calcium hydroxide [Ca(OH)2] from the garden centre. Very powdery white stuff.

From a quick search on here it seems to be the same as hydrated lime. Is that definitely correct?

Would 5% of calcium hydroxide in a 50/50 casing mix be ok?

Thanks


Edited by roquet (07/18/07 02:36 AM)


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OfflineRogerRabbitM
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Re: calcium hydroxide ok for 50/50? [Re: roquet]
    #7191757 - 07/18/07 06:53 AM (16 years, 7 months ago)

5% would be too much. More like 2%. Adjust so the pH of the peat is 7.5 to 8.
RR


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Invisibleroquet
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Re: calcium hydroxide ok for 50/50? [Re: RogerRabbit]
    #7191783 - 07/18/07 07:10 AM (16 years, 7 months ago)

Thanks RR. You saved me from potential disaster there. I'd just done some at 5% and was letting it cool for use tomorrow morning. I've now doubled the amount of peat and verm and it's back in the mircowave.


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OfflineDr_T
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Re: calcium hydroxide ok for 50/50? [Re: RogerRabbit]
    #7191800 - 07/18/07 07:17 AM (16 years, 7 months ago)

2% by volume, right? Or weight?
... cause I'm using the same stuff ...


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Mushroom-Hut Shop: Substrate Mix


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