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 NextKind
Cannabinoid
Registered: 08/03/04
Posts: 252
Last seen: 19 years, 4 days
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 Fractional sterilization? 
#3747377 - 02/07/05 07:42 PM (19 years, 2 months ago) |
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As soon as I get the money, I'm going to buy a cheapo PC, but until that time comes, Im going to start this grow. Does this fractional sterilization actually work for grains?
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Rexysf
Stranger
Registered: 08/23/04
Posts: 63
Last seen: 14 years, 1 month
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Re: Fractional sterilization? [Re: NextKind]
#3747384 - 02/07/05 07:44 PM (19 years, 2 months ago) |
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it works sometimes.. It is a very inconsistant method of sterilization
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 Holydiver
Stranger
Registered: 03/19/01
Posts: 5,156
Loc: The midnight sea
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Re: Fractional sterilization? [Re: Rexysf]
#3747392 - 02/07/05 07:46 PM (19 years, 2 months ago) |
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Wait until you can get the pressure cooker, frac. sterilization of grains is not reliable.
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To find a place to live between the negatives and positives.
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NextKind
Cannabinoid
Registered: 08/03/04
Posts: 252
Last seen: 19 years, 4 days
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Re: Fractional sterilization? [Re: Holydiver]
#3747435 - 02/07/05 07:57 PM (19 years, 2 months ago) |
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Will this pressure cooker be good enough? Will I be able to adjust the psi on this one? If it works Ill get it! 
Pressure Cooker.
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: NextKind]
#3747442 - 02/07/05 07:59 PM (19 years, 2 months ago) |
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That thing is WAY too small. Mine is 18 quarts and holds 7 1-quart jars.
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Holydiver
Stranger
Registered: 03/19/01
Posts: 5,156
Loc: The midnight sea
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Re: Fractional sterilization? [Re: jonas]
#3747456 - 02/07/05 08:03 PM (19 years, 2 months ago) |
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Yeah that cooker will work, you don't need a behemoth pressure cooker. I used a Mirro 4 qt. for years and it worked great. If everything doesn't fit in one run though, you'll have to wait for another batch to cook through-that's the difference between large and small cookers.
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To find a place to live between the negatives and positives.
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: Holydiver]
#3747495 - 02/07/05 08:12 PM (19 years, 2 months ago) |
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Yeah, Diver is correct in that it WILL work. The question then becomes how long do you want to spend cooking up jars? If you're doing any decent sized grows you'll be cooking for quite a while with a 4-quart.
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NextKind
Cannabinoid
Registered: 08/03/04
Posts: 252
Last seen: 19 years, 4 days
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Re: Fractional sterilization? [Re: jonas]
#3747599 - 02/07/05 08:31 PM (19 years, 2 months ago) |
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I should be doing a fair size for a somewhat inexperienced grower, but I dont mind spending the extra time, i think. Can i set the psi on that thing or do i just have to adjust the times for cooking to the psi it is set on?
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: NextKind]
#3747612 - 02/07/05 08:32 PM (19 years, 2 months ago) |
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You adjust the heat on your stove. Put it on the highest setting until you reach 15 psi and lower it if it starts to go over.
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NextKind
Cannabinoid
Registered: 08/03/04
Posts: 252
Last seen: 19 years, 4 days
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Re: Fractional sterilization? [Re: NextKind]
#3747643 - 02/07/05 08:37 PM (19 years, 2 months ago) |
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BTW it is really going to come down to whether I should get a heater for my incubator (tub in tub incubator) or a PC. Which would be more beneficial? If i don't do that type of incubator, what kind can I do to keep my jars and optimal temps ?? Thanks!!
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: NextKind]
#3747779 - 02/07/05 08:55 PM (19 years, 2 months ago) |
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Ahhh ... you really need both. Unless you have a heating pad or something to use for incubation you'll be looking at very very long colonization times. I'd say the PC is more important because you could put the jars near the radiator or something. Just don't expect great results without both an incubator and a pressure cooker.
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: jonas]
#3747787 - 02/07/05 08:56 PM (19 years, 2 months ago) |
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Actually on second thought ... go with the heater and do the PF tek. By the time that grow is through I'm sure you will have had enough time to save for even the cheapest PC. If I were you I'd do PF tek and save up for a bigger PC, like an 18 quart. They're only 70 bucks at walmart. Yeah, I know, you probably don't want to spend that much but in the long run it's well worth it.
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dmc_
211
Registered: 12/23/03
Posts: 559
Loc: Portland, OR
Last seen: 18 years, 6 months
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Re: Fractional sterilization? [Re: Holydiver]
#3747816 - 02/07/05 09:00 PM (19 years, 2 months ago) |
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Quote:
Diver said:
Yeah that cooker will work, you don't need a behemoth pressure cooker. I used a Mirro 4 qt. for years and it worked great. If everything doesn't fit in one run though, you'll have to wait for another batch to cook through-that's the difference between large and small cookers.
I've been using my mirror 4quart for the last year. It works great, just takes alittle patience. Look on ebay for a good used AA.
Edited by dmc_ (02/07/05 09:00 PM)
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chocbruce
Learned Student
Registered: 11/29/04
Posts: 233
Loc: ...
Last seen: 4 years, 5 days
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Re: Fractional sterilization? [Re: dmc_]
#3747852 - 02/07/05 09:05 PM (19 years, 2 months ago) |
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Meh. It will work. It looks similar to mine, which is a 4.5 qt. The only problem is that you will need to do multiple batches...could be a pain. Make sure it goes up to 15 PSI (or at least 13).
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I look for answers and present ideas, but in no way shape or form endorse, or partake in, growing, or manufacture of substances, or plants, or any specie that is illegal in your neck of the woods. I do however, tear the tags off of my mattresses. Be warned.
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jonas
member
Registered: 11/18/02
Posts: 499
Last seen: 18 years, 2 months
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Re: Fractional sterilization? [Re: chocbruce]
#3747868 - 02/07/05 09:08 PM (19 years, 2 months ago) |
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Quote:
chocbruce said:
Meh. It will work. It looks similar to mine, which is a 4.5 qt. The only problem is that you will need to do multiple batches...could be a pain. Make sure it goes up to 15 PSI (or at least 13).
Just keep in mind that if it only goes to 13 you need to adjust PC time accordingly (sp?).
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Shroom_man
Stranger
Registered: 01/18/05
Posts: 33
Loc: Canada, New Brunswick
Last seen: 18 years, 11 months
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Re: Fractional sterilization? [Re: Holydiver]
#3747940 - 02/07/05 09:18 PM (19 years, 2 months ago) |
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For grain steralization a PC that can cook at 15psi's min. is required. PC If your going to go with the PF tech
[brown rice flour and vermiculite], you can use a cheaper 7.5-10psi PC. I owne small .55\bar PC, which I think is 7.5psi's, and I have had 0% contams. I do make sure that I increase my sterlization time from the recomended 60mins to 1.5h-2h. The only time I have gotten contams was during inoculation when I was shaky and the tip of needle touched the cover. I also case using a crumbled colnized cake, and placing the crumbled cake material in a pie pan [that has a thin layer of vermiculite on the bottom], then a 1/2in of moist vermiculite spreaded evenly on the top, it is then covered with cling wrap, then placed back in the incubator until the mycelium starts to poke out of top, all over. The pan is then placed in the fruiting chamber to allow the magic of pinning to begin. The PF Tech. is great for beginners, such as myself. I also love that the cakes can be used for easy caseing!
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I have now aquired 5 differen't P. Cubensis varities.
--Cambodean-- (vendor checked out and is well knowen by many here and at other fourms)
--Mexi-Cub-- (Again Vendor is well knowen)
--Thiland Pink Bufflo-- (vendor is well knowen)
--Hawiian Strain
--Origional PF-tech strain
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ATWAR
Connoisseur
Registered: 01/26/03
Posts: 1,640
Loc: #108768 in line...
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Re: Fractional sterilization? [Re: NextKind]
#3748213 - 02/07/05 09:59 PM (19 years, 2 months ago) |
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Fractional sterilization does indeed work, and is reliable. Jars must be cooked for 1.5 hours each day for 3 days in a row (half-pints). A friend had nearly 100% success with this method the entire time he grew using grains...
But save yourself all that work and get a PC. No less than 15 psi...
I can't imagine cooking the SAME jars three times just to make spawn...
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To give is to live...
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scatmanrav
Brainy Smurf
Registered: 05/08/04
Posts: 11,483
Loc: 
Last seen: 11 years, 3 months
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Re: Fractional sterilization? [Re: ATWAR]
#3748233 - 02/07/05 10:02 PM (19 years, 2 months ago) |
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Oh my god. If I cooked 3 times as many jars as I do now, I'd be up to my friggen eyeballs in rye.
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NeedMoreSleep
OCD = 100%Sterility :-)
Registered: 01/25/05
Posts: 1,210
Loc: One Inch ↑
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Re: Fractional sterilization? [Re: scatmanrav]
#3748277 - 02/07/05 10:09 PM (19 years, 2 months ago) |
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I think he meant cooking the same jars 3 times...
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"Now, we must all fear evil men. But there is another kind of evil,
which we must fear most. And that is... the indifference of good men."
-Boondock Saints
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ATWAR
Connoisseur
Registered: 01/26/03
Posts: 1,640
Loc: #108768 in line...
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Re: Fractional sterilization? [Re: scatmanrav]
#3748286 - 02/07/05 10:10 PM (19 years, 2 months ago) |
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I am curious to know if one could use fractional sterilization for agar. I may try it just for the heck of it. I know it works for grain spawn when cooked properly. A pressure cooker is not always readily available, and anything you can do to make mushroom growing cheaper, is better for those that could benefit from them as a source of food.
Mushrooms grown on waste crop materials could easily help under-developed countries... But that is a different story...
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To give is to live...
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agar
old hand
Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Re: Fractional sterilization? [Re: NextKind]
#3748318 - 02/07/05 10:16 PM (19 years, 2 months ago) |
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Quote:
NextKind said:
As soon as I get the money, I'm going to buy a cheapo PC,
Suggest you save money & when able buy BEST biggest PC you can afford. All American is the BEST
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metasin
Stranger
Registered: 10/12/04
Posts: 972
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Re: Fractional sterilization? [Re: agar]
#3748341 - 02/07/05 10:21 PM (19 years, 2 months ago) |
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I just upgraded my PC, got an AA off ebay for $40 :P
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snatchcakes
Rad Dude
Registered: 01/17/04
Posts: 714
Loc: HellTrack
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Re: Fractional sterilization? [Re: ATWAR]
#3748368 - 02/07/05 10:24 PM (19 years, 2 months ago) |
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I agree fractional steralization is reliable,as long as its done carefully and the right way.I did it this way for 6 monthes when I first started growing.Probably 15 batches and it worked every time.It was a pain in the ass,but it does work.it wasnt the success rate that made me buy a PC,it was the bullshit i had to go through to do the process,but it did work well i must admit.
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