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Old 01-13-2009, 01:56 PM   #21
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Couldn't you make a foam lid with a space cut open for the airlock to further insulate it? I am trying to come up with something like this. My apt is small so I don't have all that much room. I have a bunch of 400-900 gph pumps I use for my aquarium I could use. How cold is something like this able to get? Would lagering be possible?

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Old 01-14-2009, 03:35 PM   #22
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The foam lid is a good idea. I didn't want to cut a hole in the cooler lid because I've been using it as a mash tun. I've been able to hold temperatures as low as 38 for twelves hours or so. I've sure I could get colder if I tried just haven't had the need to yet.

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Old 01-18-2009, 07:29 PM   #23
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Quote:
Originally Posted by lamarguy View Post
I'm playing devil's advocate here, but wouldn't it be easier and just as economical to buy a small, used fridge and attach an external temperature controller?

The cost would be $150 - $250, depending upon the cost of the used fridge. And, there is no need to refill the ice bin. Just set the target temperature and walk away.

But, if you already have most of the parts lying around, this is definitely an option worth considering.
I know this is fairly common practice so this is really a question, but wouldn't you eventually build up some not-insignificant pressure in your fridge and pop the door open or something?
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Old 01-18-2009, 08:34 PM   #24
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Quote:
Originally Posted by Kass_Brauhaus View Post
I know this is fairly common practice so this is really a question, but wouldn't you eventually build up some not-insignificant pressure in your fridge and pop the door open or something?
With 5 - 10 gallon batches, it's not possible to generate enough co2 pressure to "pop open" a fridge door. You would need much larger fermentation volumes and a VERY tight door seal.

However, you could probably do it with dry ice and I'm sure the Mythbusters would love to try it...
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Old 03-23-2009, 02:58 PM   #25
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quick question - for the draining line, those are actually two different lengths of hose attached to each end of the plastic valve that came with the cooler? no leaks? do you know the diameter of them off hand?

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Old 03-25-2009, 05:42 PM   #26
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That's right, it goes into the plastic valve that is turned around backwards and two hoses are used. The diameter is the same as for most other equipment in most home brewerys like racking cane, auto siphon and bottle bucket. I think it 3/8" ID

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Old 04-03-2009, 02:17 PM   #27
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I got my build based on this flowing last night just in time for the secondary lagering of my Maibock! Thanks for the ideas!

I ended up building a bulkhead from the other thread outlining a cheap MLT conversion in the same type of igloo cooler. Once i tracked down the right washers it's working perfect.

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Old 04-03-2009, 06:05 PM   #28
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Let us know how your temps work out for lagering.

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Old 05-02-2009, 02:05 AM   #29
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I too have been dealing with temp issues, primarily in lagering, for some time. I have a converted 10 gallon MLT/Cooler and have pondered using it as a lagering cooler when I am not mashing. I have all the pieces but the controller. I work in seafood processing and have ready access to free ice. I may just try it with out the circulation in the short term.

Cheers

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Old 05-02-2009, 07:25 PM   #30
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this was test - holding 62 no problem. Top is layered foam.
Only problem is changing out ice jugs once a day. Smaller cooler holds ice, fountain pump. Probe for controller goes in larger cooler. The cold water leaving the small cooler is out the back, so you can't see it here.

Not seen in this photo, I added a valve to the bottom tubing, and another pump in the larger cooler just to circulate the cold water coming in.
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