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exagram
Phear the shroom



Registered: 02/28/07
Posts: 302
Last seen: 16 years, 7 months
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Questions on vermiculite
#6761253 - 04/08/07 01:23 PM (17 years, 9 months ago) |
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Just a couple of questions on vermiculite:
1. What's the best way to go about sterilising it? Some people say pressure cooking, some say microwaving. Frankly, I can't think of any problems with a five-minute microwaving, but I might be wrong here.
2. How about using it on its own as a casing layer? It holds moisture which the mycelium can get at and removes the need for pH balancing and buying peat moss/coco coir. Again, sounds logical to me, but then again I do use my skull to store old rags.
Any help is much appreciated.
-------------------- Raoul Duke: What Leary took down with him was the central illusion of a whole lifestyle that he helped create - a generation of permanent cripples, failed seekers, who never understood the essential old-mystic fallacy of the acid culture: the desperate assumption that somebody, or at least some force, is tending the light at the end of the tunnel.
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 10 months
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Re: Questions on vermiculite [Re: exagram]
#6761259 - 04/08/07 01:26 PM (17 years, 9 months ago) |
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It's the worst possible casing material, only marginally better than no casing at all. It's an inert volcanic material produced at exteremely high temperatures and is already sterile when manufactured. For use in pf cakes, it gets sterilzed again along with the substrate. For dunk and roll, you can bake it in the oven at 350 for half an hour, but I've used it many times right out of the bag without problems. If the bag has been sitting around open for any length of time, heat treating in whatever method you choose is a good idea. 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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Shepx83
Knowledge Hungry



Registered: 10/12/06
Posts: 67
Loc: Pennsylvania
Last seen: 16 years, 1 month
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Re: Questions on vermiculite [Re: RogerRabbit]
#6761554 - 04/08/07 02:58 PM (17 years, 9 months ago) |
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I also recall RR saying in the past using a Microwave is one of the worst possible ways of trying to sterlize, due to its full of contams. Cant clean it entirely, especially up in the enclosed fans and stuff.
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usg543
◕‿◕


Registered: 02/11/07
Posts: 5,192
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Re: Questions on vermiculite [Re: RogerRabbit]
#6761564 - 04/08/07 03:00 PM (17 years, 9 months ago) |
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Quote:
RogerRabbit said: It's the worst possible casing material, only marginally better than no casing at all. It's an inert volcanic material produced at exteremely high temperatures and is already sterile when manufactured. For use in pf cakes, it gets sterilzed again along with the substrate. For dunk and roll, you can bake it in the oven at 350 for half an hour, but I've used it many times right out of the bag without problems. If the bag has been sitting around open for any length of time, heat treating in whatever method you choose is a good idea. RR
RR what do you personally think is the best for casing?
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EntheogenicPeace
Scholar



Registered: 10/04/05
Posts: 3,926
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---
Edited by EntheogenicPeace (02/05/15 04:44 PM)
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