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Old 09-09-2008, 05:06 AM   #1
JohnnyKim
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Default filtering after fermenting?

Hello everyone?
in the past week or 2 ive read alot about home brewing on this forum, online and such so i decided yesterday to buy a kit and some ingreidents. i made 'Mesa trail pale ale'. so heres a question that had me thinking.

is it okay if i 'filter' after fermenting? just to get clarify my brew?
like, can i attach a paper coffee filter at the end of a siphon hose when transfering to the bottling pail?

Thanks in advance.

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Old 09-09-2008, 05:22 AM   #2
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No, you cannot if you are bottling.

This is because when you bottle, you add sugar to the beer so that the yeast will eat the sugar in the bottle and emit CO2 - thus carbonating the beer. If you filter the beer, you will filter out the yeast and thus bottle carbonation will not be possible.

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Old 09-09-2008, 07:08 AM   #3
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ah that acualy makes sense...not sure why i didnt thought of that lol. thanks!

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Old 09-09-2008, 10:35 PM   #4
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you can transfer to a secondary for a few weeks to help it clear. Or perhaps use Gelatin. I'm trying gelatin right now. There is a thread about it's use here:http://www.homebrewtalk.com/f13/gelatin-finings-53912/

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Old 09-10-2008, 06:21 AM   #5
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irish moss...whirlflock......do a search for fining agents. I always use the later because gelatin always scared me for some reason. If and when you ever begin to keg your beer you will be able to filter it because its carbonated via a tank and not yeast. Atleast it will give you something to shoot for

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Old 09-10-2008, 06:27 AM   #6
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The advice already given is good do what they said. But for the record a coffee filter is no where near fine enough to filter out so much yeast as to prevent carbonation.

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Old 09-10-2008, 12:35 PM   #7
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You also want to avoid mixing up the fermented wort when you transfer. Adding oxygen to it at this stage could lead to the dreaded off flavors.

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Old 09-10-2008, 01:21 PM   #8
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Use gelatin finings in the secondary. But the most import thing is time. The longer you let your brew sit in the primary/secondary the more particles will fall out and become compact on the bottom.

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Old 09-10-2008, 01:31 PM   #9
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When racking from the primary to the secondary tie a sanitized nylon hopping bag to the end of the racking cane. Rack through it and it will help filter out most of what you don't need and let all the good stuff through. I have posted this a number of times, am I the only one that does this? It works great!

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Old 09-10-2008, 01:44 PM   #10
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I don't do that because it's not necessary. If you need some kind of filtering mechanism during transfer, odds are that you're not giving the beer enough time to drop the yeast and sediment out. The beer pic in my avatar used no finings in the boil, no finings in secondary, no filtering at any time. I simply wait.... then I crash chill the secondary for 3 days, then I keg. I'd do the same if I was still bottling but then I'd stash the beer in the fridge for two weeks after I verify carbonation.

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