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MustardMan
Peace Frog


Registered: 10/18/05
Posts: 970
Last seen: 5 years, 5 months
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Whats the best way to Sterilize my 50/50 mix
#5760589 - 06/17/06 01:08 PM (17 years, 7 months ago) |
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Hey, I plan on using 50/50 (Vermiculite and Peat Moss) to case my PF cakes.
What is the best/easiest way to sterilize the mixture? And can I just sterilize it separately in a big bowl, and just wash my hands very well, and put in the tub? Or do I have to put in the tub, and then sterilize it?
Thanks.
-------------------- Wild Psilocybe Ovoideocystidiata
 Cultivated Cubensis

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FooMan



Registered: 02/02/05
Posts: 8,957
Loc: Earth
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Re: Whats the best way to Sterilize my 50/50 mix [Re: MustardMan]
#5760600 - 06/17/06 01:14 PM (17 years, 7 months ago) |
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Nuke it a couple of times in 5 minute intervals, stirring it a little each time except the last time. Oh yeah, make sure it's wet first unless you like to play with fire.
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Quick WBS Prep
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MustardMan
Peace Frog


Registered: 10/18/05
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Re: Whats the best way to Sterilize my 50/50 mix [Re: FooMan]
#5760609 - 06/17/06 01:18 PM (17 years, 7 months ago) |
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Thanks
-------------------- Wild Psilocybe Ovoideocystidiata
 Cultivated Cubensis

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Premedman1
Assistant to the insistent


Registered: 12/21/05
Posts: 2,376
Loc: South of Sanity
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Re: Whats the best way to Sterilize my 50/50 mix [Re: MustardMan]
#5760614 - 06/17/06 01:18 PM (17 years, 7 months ago) |
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I mix equal parts of verm, peat moss, and powdered oyster shell. Wet it down, and load it into quart jars. Pressure cook for about 25-30 minutes @ 15 PSI. Let them cool, dump them out in a clean bowl. Mix it up with clean hands, and do the "squeeze test" to get the proper moisture content. Crumble lightly over the substrate as evenly as possible. If easy is what you're looking for, you can microwave the wet mix on high for 5 minutes, stir, and repeat for a total of 10 minutes cook time. It's worked for me in the past.
-------------------- Build a man a fire, he is warm for the night. Set a man on fire, he is warm for the rest of his life.
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
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Loc: Seattle
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Re: Whats the best way to Sterilize my 50/50 mix [Re: Premedman1]
#5760698 - 06/17/06 02:01 PM (17 years, 7 months ago) |
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Read up on the pasteurization teks. Casing mix should be pasteurized for best results, not sterilized. 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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dysphoria
lost soul


Registered: 06/04/03
Posts: 1,651
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Re: Whats the best way to Sterilize my 50/50 mix [Re: RogerRabbit]
#5760767 - 06/17/06 02:44 PM (17 years, 7 months ago) |
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i did an experiment once, to see about how hot the casing mix is getting in the microwave, at 5 minutes. i loaded all my stuff into gallon freezer bags, left slightly open so they wouldnt explode..and microwaved for 2 and a half minutes, two times. after the first 2 and a half minutes, id take the bag out and fondle the bag to mix it up...for lack of a better word at the moment. afterwards, i immediately opened the bag and stuck the meat thermometer in the bag...the temperature never got above 180, and the best i can guess, it kept a 150-180 temp for at least an hour or so, while it cooled down in a closet. i believe this would be long enough duration to qualify for complete pasteurization, but not quite hot enough for sterilization.
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MustardMan
Peace Frog


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Re: Whats the best way to Sterilize my 50/50 mix [Re: dysphoria]
#5761096 - 06/17/06 04:45 PM (17 years, 7 months ago) |
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Hmm...
RR, how significant a difference is there in flush sizes when the casing mix is pasteurized oppose to nuked? Is there much at all? It seems like a much more tedious route, especially considering Im only making casings from 6 PF cakes. Thanks.
-------------------- Wild Psilocybe Ovoideocystidiata
 Cultivated Cubensis

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ruination
Stranger

Registered: 03/15/06
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Re: Whats the best way to Sterilize my 50/50 mix [Re: FooMan]
#5761354 - 06/17/06 06:00 PM (17 years, 7 months ago) |
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foo, i learned that the hard way. i nuked that mix in a plastic bowl, dry. 3 minutes in i smell burning, open it up and the bottom of the bowl fell out. embers flew everywhere and smoked filled my kitchen. not my shining moment
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ChromeCrow
one ancient mutha



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Re: Whats the best way to Sterilize my 50/50 mix [Re: RogerRabbit]
#5761434 - 06/17/06 06:31 PM (17 years, 7 months ago) |
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Quote:
RogerRabbit said: Read up on the pasteurization teks. Casing mix should be pasteurized for best results, not sterilized. RR
why is this RR?
there is no beneficial microbes to try to keep alive in the casing layer?
isn't that the biggest part of past. over sterilizing bulk substrates ?
i sterilize everything (actually did my first pasteurization a week or so ago.. damn new PC seals suck these days grrr)
so i am not saying your wrong, pasteurizing anything hasn't been style so i really don't know, and I'm interested in your reasoning.
but i have always heard pasteurize substrates, sterilize casing material...
i never noticed sterilizing my casing material to be detrimental in anyway???
-------------------- ISO: Orissa, Malabar, z strain
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JonnyDeformed
ॐ


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Re: Whats the best way to Sterilize my 50/50 mix [Re: ChromeCrow]
#5762180 - 06/17/06 10:44 PM (17 years, 7 months ago) |
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LOL ruination.... nice one
--------------------
dubiousness Dubious compound it is dangerous to be right in matters on which the established authorities are wrong. A penalty for possession of a drug/plant should not be more damaging than the drug/plant itself.
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Premedman1
Assistant to the insistent


Registered: 12/21/05
Posts: 2,376
Loc: South of Sanity
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Re: Whats the best way to Sterilize my 50/50 mix [Re: ChromeCrow]
#5762704 - 06/18/06 12:32 AM (17 years, 7 months ago) |
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Quote:
ChromeCrow said: but i have always heard pasteurize substrates, sterilize casing material...
i never noticed sterilizing my casing material to be detrimental in anyway???
I agree. An explanation would be nice. I've seen a noticeable decrease in the mean green since I have began sterilizing my casing material rather than pasteurizing it.
-------------------- Build a man a fire, he is warm for the night. Set a man on fire, he is warm for the rest of his life.
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HippieChick
Chicks can do it too!


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Re: Whats the best way to Sterilize my 50/50 mix [Re: Premedman1]
#5763159 - 06/18/06 03:18 AM (17 years, 7 months ago) |
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Same here . When I switched to 50/50+ casing layer , I started with sterilizing it . Haven't had any contam problems since . 
Peace,Love,Happiness and Harmony Hippie Chick
-------------------- Peace,Love and Happiness HC Freedoms just another word for nothing left to lose.............. I LUV My Greenhouse http://www.shroomery.org/forums/showflat.php/Number/5545848#5545848 My First Pans http://www.shroomery.org/forums/showflat.php/Number/6212058#6212058
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MustardMan
Peace Frog


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Re: Whats the best way to Sterilize my 50/50 mix [Re: HippieChick]
#5763717 - 06/18/06 09:26 AM (17 years, 7 months ago) |
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So the question remains..?
-------------------- Wild Psilocybe Ovoideocystidiata
 Cultivated Cubensis

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majlo
crazy


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Re: Whats the best way to Sterilize my 50/50 mix [Re: MustardMan]
#5764043 - 06/18/06 11:14 AM (17 years, 7 months ago) |
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is that why i had none conatimation on my ever first grow making a casing...?
i also sterilize casing mix and if i spray it i spray it with tap watter and no contams yet
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HarvestTheBrain
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Re: Whats the best way to Sterilize my 50/50 mix [Re: MustardMan]
#5764044 - 06/18/06 11:15 AM (17 years, 7 months ago) |
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Sterilizing in micro for 5min always worked for my bud, least amount of work too
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MustardMan
Peace Frog


Registered: 10/18/05
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Last seen: 5 years, 5 months
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Re: Whats the best way to Sterilize my 50/50 mix [Re: HarvestTheBrain]
#5764232 - 06/18/06 12:41 PM (17 years, 7 months ago) |
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I think Ill do nuke my mix then, see how it goes...
Thanks everyone.
-------------------- Wild Psilocybe Ovoideocystidiata
 Cultivated Cubensis

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rob_the_dj_guy
Stranger

Registered: 06/14/06
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Re: Whats the best way to Sterilize my 50/50 mix [Re: MustardMan]
#5764745 - 06/18/06 03:23 PM (17 years, 7 months ago) |
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i dont have a microwave because i'm a chef and never use one. my question is this. is it possible to sterilize casing mix in the oven?
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Premedman1
Assistant to the insistent


Registered: 12/21/05
Posts: 2,376
Loc: South of Sanity
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Re: Whats the best way to Sterilize my 50/50 mix [Re: rob_the_dj_guy]
#5765915 - 06/18/06 11:01 PM (17 years, 7 months ago) |
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-------------------- Build a man a fire, he is warm for the night. Set a man on fire, he is warm for the rest of his life.
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