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Old 07-18-2012, 05:43 PM   #1
ianmatth
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I'm brewing a highly hopped-up lager with Pilsner yeast. I plan to keep it in the primary fermenter for 7 days at 48-50 degrees. I wanted to do an experiment with dry hopping with different hops, so I wanted to use half gallon glass bottles for secondary fermentation. Would I be fine just using the cap so it is airtight, or would I need some way to blow it off?

 
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Old 07-18-2012, 05:50 PM   #2
beergolf
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You will need some way to relieve pressure unless you want a big messy bang.

You could either fit the bottles with an airlock or even just cover them with some sterilized foil.

 
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Old 07-18-2012, 05:51 PM   #3
AnOldUR
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Quote:
Originally Posted by ianmatth View Post
Would I be fine just using the cap so it is airtight, or would I need some way to blow it off?
If you've reached your final gravity and checked it over a few days for stability, it should be safe. Even so, to be safe I'd use sanitized foil and a rubber band.

 
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Old 07-19-2012, 10:15 AM   #4
ianmatth
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Thanks, I'll use sanitized foil and a rubber band.

 
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