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Offlineeffwun
supafly guy
Registered: 10/04/01
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50/50 + casing tek/ pH ?
    #965507 - 10/16/02 10:55 AM (14 years, 1 month ago)

hey all

this guy i know followed the 50/50+ casing tek to a T, and used distilled water. problem he had was this, the mycelium failed to colonize the casing, and when he checked the pH of the casing is was around off the around 9.0. he made another batch of casing mix using less hydrated lime, and the same amount of oyster shell. same problem. i've heard gypsum can be used to lower pH as long as it isn't the kind that has magnesium in it. he reasoned that perhaps the pH of the peat was adjusted instead of being around 2 or 3. anyone else have this problem? any other suggestions


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OfflineAnnoA
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Re: 50/50 + casing tek/ pH ? [Re: effwun]
    #965607 - 10/16/02 12:16 PM (14 years, 1 month ago)

Don?t use hydrated lime, use calcium carbonate.


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InvisibleBilge
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Registered: 08/26/02
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Re: 50/50 + casing tek/ pH ? [Re: Anno]
    #965900 - 10/16/02 02:58 PM (14 years, 1 month ago)

Hawk's Eye 50/50+ suggests hydrated lime. no?

http://www.thehawkseye.com/50-50casing.html


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OfflineAnnoA
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Re: 50/50 + casing tek/ pH ? [Re: Bilge]
    #965908 - 10/16/02 03:03 PM (14 years, 1 month ago)

He does, but Paul Stamets suggests calcium carbonate.

Also read http://shroomery.org/faq/faq.php?display=faq&nr=112&catnr=4&prog=1&lang=en .


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InvisibleBilge
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Re: 50/50 + casing tek/ pH ? [Re: Anno]
    #965942 - 10/16/02 03:13 PM (14 years, 1 month ago)

darn, i wish i had read that before. thank you very much!


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InvisibleSixTango
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Registered: 01/21/02
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Re: 50/50 + casing tek/ pH ? [Re: effwun]
    #966331 - 10/16/02 05:32 PM (14 years, 1 month ago)

Listen to ANNO. He speaks the truth. Calcium carbonate, NOT hydrated lime.

A ground calcuim carbonate is a gentle buffer. Hydrated lime is HOT.

You can find several brands of soil sweeteners = ground up limestone (raw calcuim carbonate) at almost any garden supply store. Cost is generaly around $4 usd, for a 20 pound bag.

If you want fancy super refined USP grade calcium carbonate powder. You can find that at most home brew or wime making supply stores.

6T  :tongue: 


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InvisibleBilge
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Re: 50/50 + casing tek/ pH ? [Re: SixTango]
    #969361 - 10/17/02 04:02 PM (14 years, 1 month ago)

for sale or trade: one 10 pound bag of hydrated lime  :tongue:


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Offlineeffwun
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Re: 50/50 + casing tek/ pH ? [Re: SixTango]
    #969498 - 10/17/02 04:45 PM (14 years, 1 month ago)

calcium carbonate is what oyster shell is (more/less) right? also, why the hell does the 50/50+ tek say to use hydrated lime then??? so what would one suggest the altered 50/50+ recipe should be? same but w/o hydrated lime?


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OfflineAnnoA
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Re: 50/50 + casing tek/ pH ? [Re: effwun]
    #969550 - 10/17/02 04:59 PM (14 years, 1 month ago)

> also, why the hell does the 50/50+ tek say to use hydrated lime then???

Because Ryche thought he read it in the Mushroom Cultivator, used it, and apparently had success. Obviously he dosed the hydrated lime just right, since he never had that troubles.


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OfflineRaadt
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Re: 50/50 + casing tek/ pH ? [Re: effwun]
    #970390 - 10/17/02 09:16 PM (14 years, 1 month ago)

i had the same problem for a while, but after 3 casings for 2 weeks each i gave up on hydrated lime - because I ended up buying a PH testing kit for pools (goes from 6.8 - 8.2 and it was far over the 8.2 mark, much darker red. So i'm sure I was probably near 10, the myc wouldn't colonize it. Now i've finally I *think* fixed those casings, scraping the layer off. I couldn't understand why iw as having problems, I ordered some calcium carbonate from sporeworks.


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OfflineAnnoA
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Re: 50/50 + casing tek/ pH ? [Re: Raadt]
    #971113 - 10/18/02 02:09 AM (14 years, 1 month ago)

I changed the description of the tek in the grow/find section:

50/50+ Casing Tek
Note: the tek advises the use of hydrated lime. While it can be used, it has to be used in just the correct amount.
It?s better and more safe to use calcium carbonate(crushed limestone).

Read this faq for more information.


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InvisibleRyche HawkV
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Re: 50/50 + casing tek/ pH ? [Re: effwun]
    #985367 - 10/23/02 01:54 AM (14 years, 1 month ago)

The hydrated lime I have been using all along is horticultural hydrated lime. Works great for us and I get plenty of feedback from customers that it works fine for them as well. But occaisionally I also read threads like this. I really have to wonder if the Hi-Yield brand we are using is a very mild hydrated lime. It does say "to sweeten the soil" on the bag.
I'll post a picture and ingrediants of it soon. I would suggest going with the safe bet and using calcium carbonate since there are so many differnent types of lime out there, most of them non-beneficial to mushrooms.
I'll note that in our 50/50+ tek to avoid any further confusion.

thanks Anno.





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Amazon Shop for: Calcium Carbonate, Gypsum, Oyster Shell, Paul Stamets, Peat, pH Test Strips

Mushrooms, Mycology and Psychedelics >> Advanced Mycology

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