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OfflineKOH84
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Pasteurizing substrate - would this work?
    #21313525 - 02/22/15 03:10 PM (9 years, 10 months ago)

I'm new to using substrate and I currently mixed up some coir and vermiculite (using Frank's Twelve Steps to Shrooms TEK) and it seems to imply that pasteurization is the safest route.  I don't have any extra mason jars and no large Ziplock bags.  From my understanding, in order to pasteurize, I want to bring the internal temperature of my substrate to 160 degrees Fahrenheit, or somewhat close to that, and keep it there for an hour. 

Here's my question: what's stopping me from mixing up my coir/vermiculite/gypsum mixture and then transferring it to a large stock pot and cooking it to an internal temperature of 160 degrees F? 

So far, most TEKs are calling for using mason jars or large plastic bags for the substrate and then bringing it to 160 degrees on a stove top.  Is there anything improper about dumping it all into a large pot and just cooking it in there without any other container?  My thought was, for simplicity, just do that and keep a meat thermometer in the substrate, so that I can keep any eye on it. 

Is there anything wrong with doing that?  If I kept the lid on the stock pot, that would keep the substrate from drying out, I presume? 

Thanks for any advice.

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Invisibled0urd3n
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Re: Pasteurizing substrate - would this work? [Re: KOH84]
    #21313565 - 02/22/15 03:20 PM (9 years, 10 months ago)

If you are out of jars and are just using coir/verm for your substrate, then just use the Bucket Tek. Do a search for it. It works fine for coir/verm, just don't do it with hpoo.


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InvisiblebodhisattaMDiscordReddit
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Re: Pasteurizing substrate - would this work? [Re: KOH84]
    #21313574 - 02/22/15 03:21 PM (9 years, 10 months ago)

you'll just burn it and evaporate off water if it's not in a jar or bag during pasteurization. it's 140-160F for an hour internal core temp.

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OfflineTrIpPyDuDe
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Re: Pasteurizing substrate - would this work? [Re: bodhisatta]
    #21313595 - 02/22/15 03:28 PM (9 years, 10 months ago)

Bucket Tek


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Offlinesilverstem
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Re: Pasteurizing substrate - would this work? [Re: KOH84]
    #21313616 - 02/22/15 03:34 PM (9 years, 10 months ago)

Quote:

KOH84 said:
Here's my question: what's stopping me from mixing up my coir/vermiculite/gypsum mixture and then transferring it to a large stock pot and cooking it to an internal temperature of 160 degrees F?



the jars help keep the temp constant throughout the sub. if you get coir too hot the thermophiles will die and contamination would be fore likely. with that being said if your core temp is 160f the outsides would be around 180 or 190 the bucket tek is your best bet. it has worked and would be safer then using a large stockpot.


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OfflineKOH84
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Re: Pasteurizing substrate - would this work? [Re: bodhisatta]
    #21313653 - 02/22/15 03:50 PM (9 years, 10 months ago)

Thanks for the advice and info.  It's really useful and I'm about 24 hours away from mixing my substrate with my spawn and I don't want to screw anything up.  It sounds like the Bucket TEK is used quite a bit but you may eventually succumb to bacteria or contamination after a flush or two. 

If I wanted to pasteurize, would getting a couple of Glad Ziplock large bags, filling them with my newly created substrate, and then throwing them into a stock pot for an hour and keeping the internal temp at 140 - 160, work?  If the baggies are sealed, that would keep the moisture from going anywhere, right? 

I'm thinking about trying one monotub with the Bucket TEK and the other with a "true" pasteurized substrate to see if there's much difference.  Thanks again for the advice!

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OfflineKOH84
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Re: Pasteurizing substrate - would this work? [Re: KOH84]
    #21313674 - 02/22/15 03:57 PM (9 years, 10 months ago)

Or...am I being to ridiculous in trying to do a "true" pasteurization?  Just bang out two batches of Bucket TEK and use that as opposed to pasteurizing?

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Invisibleamp244
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Re: Pasteurizing substrate - would this work? [Re: KOH84]
    #21313736 - 02/22/15 04:18 PM (9 years, 10 months ago)

I suppose you could pasteurize it in a pot without bags or jars if you wanted to. As long as you have some sterilized water to add if your substrate dries out, I don't see why it wouldn't work. Maybe you could develop a tek where you oversaturate the substrate to the point that when your done cooking it in the large pot the moisture content is perfect! 

Once you get pasteurization techniques down, you will be able to add much more than just coir/verm/gypsum, which is relatively low in nitrogen. The bucket tek works well for this substrate mix, hell I've heard of people just hydrating and spawning with good results, but once you start adding other ingredients (ie: coffee, h/poo, straw) you will need to pasteurize in order to achieve success.

I have done many coir/verm/gypsum subs using the bucket tek and have never had a problem, its easy, quick, and works. If you are doing coir/verm/gypsum I would use the bucket tek, any other mix needs to be properly pasteurized.

An easy way to pasteurize is to get oven bags from the grocery store, load your hydrated substrate in these bags, stick a thermometer in there and heat it up. You can go to goodwill and buy an old crock pot/roaster for under 10 bucks and use those, you can heat water and submerge the bag, or you could just stick them in your oven.

Good luck:thumbup:


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Edited by amp244 (02/22/15 04:27 PM)

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Offliner00tuuu123
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Re: Pasteurizing substrate - would this work? [Re: bodhisatta]
    #21313769 - 02/22/15 04:33 PM (9 years, 10 months ago)

Quote:

bodhisatta said:
you'll just burn it and evaporate off water if it's not in a jar or bag during pasteurization. it's 140-160F for an hour internal core temp.



:whathesaid: Plus it's messy.


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