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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Experiment tonight: Proper bucket tek
#17229838 - 11/16/12 02:02 PM (12 years, 2 months ago) |
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I've always done my pasteurization on the stove, but there are several appealing reasons for using the bucket tek. It's set and forget, no need to keep tabs on the temp and it doesn't allow leeching. I'm wanting to add worm castings to my substrate so a bucket pasteurization with proper temps seems ideal.
So what I'm going to try is to insulate the bucket and determine what temperature water needs to go into the bucket in order to achieve a starting temp of around 155-160. If I can keep the temp between there and 140 for a 1.5 hr duration it might be a good thing. I'll get things going when I get off work later today. Til then, any comments or suggestions are appreciated.
I will be using foam rubber on the sides, top and bottom. There will be a small hole in the top for a temperature probe. I'm thinking of running the first experiment with 170 degree water, hoping it will cool to around 160 after mixing with the substrate. Will this be hot enough or do you think the water will experience more than a 10-15 degree drop?
Ideally I'd like to be able to run a starting temp under 150 and still finish above 140. I figure a little extra heat for the first batch is a good idea until I have a better idea of what to expect.
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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Rickster
El Conquistador



Registered: 02/06/06
Posts: 659
Loc: Babylon
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17229878 - 11/16/12 02:14 PM (12 years, 2 months ago) |
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Sounds like a plan. Pasteurizing was always my least fav step, I ultimately started hydrating and placing in sealed jars and put in tempt water and eliminated the mess for the most part. Keeping temp is tedious sometimes but seems easiest this way. The only issue is it being done in qt jars and doing it all day long to get the quantity needed. Good luck.
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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Re: Experiment tonight: Proper bucket tek [Re: Rickster]
#17231421 - 11/16/12 07:05 PM (12 years, 2 months ago) |
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Okay I'm about to start the 1st test. I though it would be more MacGuyver to use bath towels. One is folded several times to slightly larger than the buckets footprint for the bottom. Another is folded lengthwise and wrapped around the circumference, secured with a single piece of duct tape. A third piece will be placed over the lid. The whole thing will be inside a trashbag as an outer shell. If this goes well I'll start on a foam bucket the plastic one can nest in. Hopefully it will work fine either way.
Temp of water going in will be 175. I will check the ambient temperature with an external reading a few minutes after securing the lid and at the 15 30 60 and 90 minute marks. I'll check the core temp at 30 60 and 90.
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17231705 - 11/16/12 07:48 PM (12 years, 2 months ago) |
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I ended up using 170F water and guessed low. Within a few minutes the ambient temp was 135F. At the 30 minute mark the temp is still 135 and the core temp is 135. I'm going to keep measuring to the 1.5 hr mark to see what the temp variance ends up being. As long as the start and finish temps are within 20 degrees I think it might work and I'll have a much better guess for the 2nd attempt.
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17232074 - 11/16/12 08:57 PM (12 years, 2 months ago) |
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Starting temp using 170F water: 135 Finishing temp: 120
This means it's possible to get a reasonably good pasteurization from a bucket insulated with some towels and a trash bag in a room temp area. In theory 190 degree water would translate to 155 initial temp and final temp of 140 with the core reaching those temps for over an hour. I think towels are poor performers and temperature variance can be reduced using other materials. I have better materials but I'll test again with the towels in a few weeks to confirm the ideal water temp.
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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Fungal growth
Lootinint



Registered: 03/21/10
Posts: 3,641
Loc: under a rock in your yard
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17232279 - 11/16/12 09:31 PM (12 years, 2 months ago) |
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i tried something similar once. they have this thin, pink foam insulation for use around windows or something. comes in various sizes/thickness.it is easily cut and fitted around the bucket. i abandoned the project at the time, but i been getting into legals and need to learn proper pasteurization.
Edited by Fungal growth (11/16/12 09:34 PM)
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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Re: Experiment tonight: Proper bucket tek [Re: Fungal growth]
#17232576 - 11/16/12 10:31 PM (12 years, 2 months ago) |
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Cool. I figured others have tried similar things. I've got several types of foam I can play with. I think a cooler would do the job too.
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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homegrownbrews
Stranger

Registered: 11/04/12
Posts: 16
Loc: Northern Cali
Last seen: 1 year, 5 months
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17302582 - 11/29/12 11:26 AM (12 years, 1 month ago) |
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Im a homebrewer as well, interested in the bucket tek and was thinking of using my old mash tun which is a ten gallon insulated Gott beverage cooler for this. I know that with about 25lbs of grain at room temp my mash tun would lose about 12-15 degrees initially when mixed in and then maintain that temp by a degree or two over an hour. The important thing to do is to "preheat" your cooler by dumping in hot water and sealing it up before for about 20 mins before u add your substrate. If u do this u won't notice such an extreme loss of temp. This totally seems like the easiest way to pasteurize.
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Rahz
Alive Again



Registered: 11/10/05
Posts: 10,315
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Re: Experiment tonight: Proper bucket tek [Re: homegrownbrews]
#17303523 - 11/29/12 02:30 PM (12 years, 1 month ago) |
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Interesting stuff. I have a 30 gallon ice box type cooler, thinking about using it. So the 12-15 degree initial loss was with or without the pre-heat?
-------------------- rahz
comfort pleasure power love truth awareness peace I am I feel I do I love I speak I see I know
"If you knew how quickly people forget the dead... you would stop living to impress people." — Christopher Walken
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Greenskybluegrass7
Transcender



Registered: 08/18/12
Posts: 142
Loc: On Lot
Last seen: 5 years, 10 months
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Re: Experiment tonight: Proper bucket tek [Re: Rahz]
#17303651 - 11/29/12 02:53 PM (12 years, 1 month ago) |
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Nice never thought of using a cooler would hold the temp longer and you could even prep the cooler like a thermos. Put something hot in there first to get the initial temp equalization then switch the heated object for the sub materials.
-------------------- Only dead fish go with the flow
Fluff not duff
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cubes4cancer
C0nn0IssuR Of s0rtS


Registered: 01/11/12
Posts: 1,527
Loc: thiswashereandthatwaswhen
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yeah coolers work great for my needs...but on the other hand so does a bucket inside another...you guessed it...bucket... this super simple tek (at room temp)gives me a good 3+ hours of constant pasteurizing temp(+-10*) when my coolers are busy holding my  both these methods are very reliable... for me atleast
-------------------- $$"IM ON A RAMAN NOODLE EVERY NIGHT BUDGET"$$
 
ROGERRABBIT: P cubensis will grow on stuffed animals, bibles, quarter pounds of weed, bras, etc.
In other words,it's hard to fuck up a cube grow.
RR
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homegrownbrews
Stranger

Registered: 11/04/12
Posts: 16
Loc: Northern Cali
Last seen: 1 year, 5 months
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Re: Experiment tonight: Proper bucket tek [Re: cubes4cancer]
#17312532 - 11/30/12 11:33 PM (12 years, 1 month ago) |
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the heat loss i was referring to was after preheating with hot water. When i was home brewing in coolers, i would preheat with 190 degree water, shake it up and let it set for about 10 minutes. add my grains (around 20-25 lbs worth in a 10 gallon cooler) and then top off with around 6 gallons of about 165-170 degree water settling in around 148-152 degrees to mash.
I really like the idea of the simple bucket tek...do u have the first bucket on the outside filled with hot water or does it act like a insulating layer? I was storing over 300 lbs of grain in buckets so i have a ridiculous amt of orange homer buckets everywhere...
someone tell me if this method would work with Hpoo/straw to pasteurize...fill buckets with desired mixture of poo/straw and then add enough boiling water or water hot enough to bring to pasteurize temps to cover mixture in bucket...cover with lid and set inside empty bucket...wait till its cool enough to handle, strain to field consistency and layer in mono tub with spawn?
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