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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Question on pasteurizing in ziplock bags
#19013469 - 10/22/13 12:17 PM (10 years, 4 months ago) |
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I'm curious. This will be my second attempt at pasteurization. Everything worked out last time n I'm 2 days into fruiting. Last time I weighed out my ziplock bags of substrate equal to each other. Is this necessary? Like, assuming by eyeing it one might be more or less than the rest is that possibly detrimental? Say the thickest bag is the one of three I use to measure temp and the other two being thinner maybe almost even sterilize, so long as I have one bag truly pasteurized it would compensate for possible sterilization of the other two? I ask this because not having to weigh would be one step less and make it a lot easier.
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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EastBayRay

Registered: 06/06/13
Posts: 746
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Re: Question on pasteurizing in ziplock bags *DELETED* [Re: DeadPhan]
#19013511 - 10/22/13 12:28 PM (10 years, 4 months ago) |
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Post deleted by EastBayRayReason for deletion: sdf
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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Re: Question on pasteurizing in ziplock bags [Re: EastBayRay]
#19013559 - 10/22/13 12:37 PM (10 years, 4 months ago) |
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Ummmm. Next!
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19013584 - 10/22/13 12:41 PM (10 years, 4 months ago) |
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Should I make sure each bag weighs as close to each other or u think I'm fine eyeing it?
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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JohnnieYen
Okay



Registered: 03/15/11
Posts: 3,529
Loc: City Z
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19013607 - 10/22/13 12:46 PM (10 years, 4 months ago) |
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you are fine eyeing it out. I use a quart scoop so I can get close, but I don't weigh it out to the gram.
3 bags works for a 66qt tub. about 12 quarts of sub. 4 per bag (duh, I can math!)
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JohnnieYen
Okay



Registered: 03/15/11
Posts: 3,529
Loc: City Z
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19013630 - 10/22/13 12:51 PM (10 years, 4 months ago) |
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Quote:
DeadPhan said: I'm curious. This will be my second attempt at pasteurization. Everything worked out last time n I'm 2 days into fruiting. Last time I weighed out my ziplock bags of substrate equal to each other. Is this necessary? Like, assuming by eyeing it one might be more or less than the rest is that possibly detrimental? Say the thickest bag is the one of three I use to measure temp and the other two being thinner maybe almost even sterilize, so long as I have one bag truly pasteurized it would compensate for possible sterilization of the other two? I ask this because not having to weigh would be one step less and make it a lot easier.
you want to make sure the bags are surrounded with water. Don't have bags pressed to the side of the pot/pc or it can get too hot and possibly melt your bag.
I like doing 3-4 bags in a large stockpot/canning pot. Lean the bags toward the center of the pot. If they are tight put some jar rings between the bags.
You can take out your digi thermometer and test all three bags to see if they are heating evenly.
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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Re: Question on pasteurizing in ziplock bags [Re: JohnnieYen]
#19018021 - 10/23/13 09:02 AM (10 years, 4 months ago) |
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Do you flatten yours out or kinda push the sub toward the bottom?
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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JohnnieYen
Okay



Registered: 03/15/11
Posts: 3,529
Loc: City Z
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19018182 - 10/23/13 09:52 AM (10 years, 4 months ago) |
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I flatten them and push all the air out. Leave a corner open so when you push out most the air, you will create a vacuum that will suck out the rest of the air.
I don't compress super hard, just enough to push the air out.
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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Re: Question on pasteurizing in ziplock bags [Re: JohnnieYen]
#19018284 - 10/23/13 10:16 AM (10 years, 4 months ago) |
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How long does it usually take for you to get the bags up to 140? I'm still trying to dial in my stove. First time I messed up and brought up to heat way to quick being I started on high. Yesterday's started on medium n it took like a half hour but also climbed fairly quick again and I had to counteract going above 165 with ice cubes again
Today I broughtitup to heat at about a quarter highland I've had the heat off well lover an hour and it leveled out at 117 118. Think I need to turn it on again. Any suggestions on how high, how long, and possibly a degree differential before turning off again
I share I'll get this down pat, but its clear that all stove are different in achieving this without monitoring. One of these days!
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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JohnnieYen
Okay



Registered: 03/15/11
Posts: 3,529
Loc: City Z
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19018732 - 10/23/13 10:44 AM (10 years, 4 months ago) |
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takes about 1.5 hrs to get to 140. I use portable electric burners though and they don't heat up as fast.

i start the burner on high and turn it off at 115 and it takes about a 1/2 hour to climb to 140. Usually peaks out at 155. At about an hour into pasteurizing it starts to drop a bit. once it his 150 i turn the burner back onto medium and raise it 2 degrees. Then shut if off.
once i go 90 minutes I take them out of the water to cool off
all in all its 3 hrs total. But I have 4 stations at 4 bags each so thats about 5 tubs worth of sub in 3 hrs.
I get my sub to field capacity with warm-hot water so the internal temp usually starts at 95-97 degrees. I also start my water before I mix up my sub so when I put them in the water bath, the water is already hot.
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Edited by JohnnieYen (10/23/13 10:53 AM)
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DeadPhan



Registered: 05/05/04
Posts: 5,260
Last seen: 4 years, 3 months
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Re: Question on pasteurizing in ziplock bags [Re: JohnnieYen]
#19018776 - 10/23/13 10:57 AM (10 years, 4 months ago) |
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Thanks a lot. I'm gonna have to try per your methods considering I'm using ziplocks as well and have yet to get it down. I'm at 139 a good two hours in and I've had to turn on a few time. How much do those little burners of yours go for?
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Big Gulps! Alright! Well, See ya later! And if i claim to be a wise man, well, it surely means that i dont know!
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JohnnieYen
Okay



Registered: 03/15/11
Posts: 3,529
Loc: City Z
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19018803 - 10/23/13 11:06 AM (10 years, 4 months ago) |
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The burners are about 15 bucks new. i also use canning pots with lids. I get most at thrift/swap meets for 3-5$ I think they are 20$ new
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SpitballJedi
Ancient Astronaut



Registered: 10/13/12
Posts: 8,598
Loc: Nibiru
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Re: Question on pasteurizing in ziplock bags [Re: DeadPhan]
#19018826 - 10/23/13 11:12 AM (10 years, 4 months ago) |
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I put my stove on 4 and use big canning pots.
When using bags, water gets 160 in about 1 hour 50 minutes and then another 20 minutes for substrate core to get 140.
When using jars, water gets 160 in about 90 minutes and core gets 140 in about 20 minutes later.
I haven't messed with putting on high because I don't want to have to keep an eye on it.
I have a temperature probe in the water set to alarm at 165, and a probe in the sub set to 140. I leave the lid on. Once the water reaches 165, I turn the stove off. I like this because I don't really have to keep an eye on it. I just have to listen for the alarms.
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