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tony8404
Stranger


Registered: 06/14/05
Posts: 1,323
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using jiffy mix, what about sterilizing ?
#7504875 - 10/10/07 11:08 AM (16 years, 3 months ago) |
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Okay, tonight i am going to case my rye jars. I have 3 bags of jiffy mix from the depot. I wanna use this for casing to try it out. i have tried the 50/50 casing method but i wanna try the right out of the bag style this time.
Once i open the jiffy bags, do we pc the jiffy mix or pastureize it or microwave it??? (i have done some reading on it but i am asking cause there may be some new method or a method that should be used and methods that shouldnt be, alot of the reading was from threads a couple years old now) If we pc the jiffy mix i know to use 15psi but what about how long ? i am thinking an hour but wanna make sure.. also, before i place the jiffy into the jars to pc them do i just make the jiffy mix field capacity wet like when you squeeze a handful and a couple drops come out?
Here is where i stand with my trays... i have a 2 tier green house ready to go. i plan on placing 4 aluminum baking pans. my pans are 27/8 deep forgot the other dimensions. but i was gonna place a 2inch substrate depth and then a 7/8's casing on top of that. would that do for a good casing? My next run i plan to use bigger trays, but right now i do not have enough jars need to get more...
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mycocurious
Mike O. Kuerias



Registered: 02/09/07
Posts: 1,265
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Re: using jiffy mix, what about sterilizing ? [Re: tony8404]
#7504891 - 10/10/07 11:17 AM (16 years, 3 months ago) |
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I'd strongly recommend steam pasteurization over all others because it's the only one that provides consistent results in both moisture content and actual pasteurization.
Here's how RR explained it once... RogerRabbit's Casing & Pasteurization Tek
Absolutely sound advice there.
--------------------
Don't mistake my tone for a "matter-of-fact" attitude. I'm just presenting what I believe to be correct, until I'm corrected... - How Myco-Curious Prepares Coir & Compost Substrates - How Myco-Curious Builds A Bulk Humidifier - How Myco-Curious Builds An Automated Greenhouse ------------------------------------ figgusfiddus said: Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.
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Captain Cubensis
Bleeding HeartLiberal


Registered: 09/18/07
Posts: 648
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Re: using jiffy mix, what about sterilizing ? [Re: mycocurious]
#7504970 - 10/10/07 11:50 AM (16 years, 3 months ago) |
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Some believe that sterilizing casing actually promotes mold because you kill a lot of beneficial bacteria when you sterilize/pasteurize casing.
Usually people don't, unless they have problems with contams in the casing.
My foaf has used Jiffy Mix for years without EVER sterilizing a single batch of casing.
My foaf has NEVER seen contams begin in the casing, NEVER.
But some people do report problems, so a good rule of thumb is to not do it, until you see problems occurring.
-------------------- www.groworganic.com Get 350lbs shipped to your door for only $100! www.mycosupply.com Online Organic Rye Berries www.hydroponics.net/i/200002 The Cyclestat 4P, a great repeat cycle timer made in the USA.
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anthony034
Messiah



Registered: 05/24/07
Posts: 307
Loc: International Waters
Last seen: 1 year, 8 months
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Re: using jiffy mix, what about sterilizing ? [Re: Captain Cubensis]
#7504974 - 10/10/07 11:52 AM (16 years, 3 months ago) |
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i pasteurize my jiffy mix in the microwave for 10 minutes. never had a problem doing so...my first attempt with jiffy un-pasteurized though, was a bacterial disaster.
-------------------- YES WE CAN
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Captain Cubensis
Bleeding HeartLiberal


Registered: 09/18/07
Posts: 648
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Re: using jiffy mix, what about sterilizing ? [Re: anthony034]
#7505125 - 10/10/07 12:30 PM (16 years, 3 months ago) |
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10 mins in the micro seems as easy as it gets!
Maybe try two casings, one with pasteurized casing, one straight out of the bag.
Remember to buffer the pH to almost 8, using crushed oyster shell, or equivalent.
-------------------- www.groworganic.com Get 350lbs shipped to your door for only $100! www.mycosupply.com Online Organic Rye Berries www.hydroponics.net/i/200002 The Cyclestat 4P, a great repeat cycle timer made in the USA.
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tony8404
Stranger


Registered: 06/14/05
Posts: 1,323
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Re: using jiffy mix, what about sterilizing ? [Re: Captain Cubensis]
#7505930 - 10/10/07 03:39 PM (16 years, 3 months ago) |
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i thought jiffy mix was all set to go right out the bag? balanced and everything... i started a thread a while back asking what else is needed to add to jiffy mix right out the bag and i was told nothing at all unless your trying to go for a long time like 4 or 5th flush, it was best to add lime or oyster shells to help prevent the nesties... i will read rr's pasturizing tek right now
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tony8404
Stranger


Registered: 06/14/05
Posts: 1,323
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Re: using jiffy mix, what about sterilizing ? [Re: tony8404]
#7505976 - 10/10/07 03:52 PM (16 years, 3 months ago) |
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okay i read rr's pasturizing tek... in the tek he says place lid or aluminum foil over the jars and into the pot... when he says lid or foil does he mean one or the other or both? and do the lids need to have holes in them and do the lids need to be put on loose or tight?
also, he says in the tek to let the water come to a boil once its at boiling let it boil one to two minutes then turn off stove... before this was said it says to boil for an hour but when i read this part it doesnt say 1 hour of boiling just 1-2 minutes... which is it? thanks
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Captain Cubensis
Bleeding HeartLiberal


Registered: 09/18/07
Posts: 648
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Re: using jiffy mix, what about sterilizing ? [Re: tony8404]
#7506315 - 10/10/07 05:16 PM (16 years, 3 months ago) |
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Usually you will be fine right out of the bag, but since every bag is different, it is best to check the pH of every batch.
Read my Casing Tek:
http://www.shroomery.org/forums/showflat.php/Number/7479477#7479477
-------------------- www.groworganic.com Get 350lbs shipped to your door for only $100! www.mycosupply.com Online Organic Rye Berries www.hydroponics.net/i/200002 The Cyclestat 4P, a great repeat cycle timer made in the USA.
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xaxphaanes
Mycologist



Registered: 08/08/05
Posts: 2,988
Last seen: 1 year, 5 months
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Re: using jiffy mix, what about sterilizing ? [Re: Captain Cubensis]
#7506322 - 10/10/07 05:19 PM (16 years, 3 months ago) |
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Quote:
10 mins in the micro seems as easy as it gets!
microwaves are 50/50 at best worst way to sterilize something.
-------------------- "Anything i say is fictional" what you should look for in manure
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mycocurious
Mike O. Kuerias



Registered: 02/09/07
Posts: 1,265
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Re: using jiffy mix, what about sterilizing ? [Re: xaxphaanes]
#7506496 - 10/10/07 06:17 PM (16 years, 3 months ago) |
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when you bring the water to a boil, you've created a 212(F) water bath for the jars filled with jiffy mix,. Stick a meat thermometer in one of the jars, put the lid on the pot and walk away. Come back in an hour and it should be done.
The first time you do it, watch the thermometer and if you notice it dropping near 140(F) before the the hour is up, turn the heat back on for a couple minutes to warm everything up again (not to a boil again) and turn it back off.
Also, it's assuming you're using an electric stove which will have a heating element that is pumping heat into the pot as it cools, keeping the water warmer than it would if you moved it off or were using a gas range. Which means if you are using a gas range you'll have the monitor the temperatures of the meat thermometer a lot closer during the process tweaking the flame back on and off.
It's really not nearly as complicated as it sounds, I'm just over explaining it.
Oh, and foil, not lids, the lids he's talking about is probably the lid of the pot. I just top the jars off with foil to prevent the "rain" from effecting my moisture content and for one of the jars, I stab a meat thermometer through it to monitor it.
--------------------
Don't mistake my tone for a "matter-of-fact" attitude. I'm just presenting what I believe to be correct, until I'm corrected... - How Myco-Curious Prepares Coir & Compost Substrates - How Myco-Curious Builds A Bulk Humidifier - How Myco-Curious Builds An Automated Greenhouse ------------------------------------ figgusfiddus said: Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.
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