Will starters blow off?

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NicePelos

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I'll be making my first starter using Wyeast 3787. I'm planning on making 2L in a 1 gal growler. Am I going to need a blow off tube?
 

The Pol

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Generally there is very little krausen, starters are generally around the 1.040 range so therefore they arent very violent. I usually just get a small 1/4" of foam on top
 

HairyDogBrewing

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I have made krausen volcanoes on the stir plate.
It depends on the strain, temperature, and the fermentables.
I use a pie plate, just in case ...
 

medic4070

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I just pitched a 1/4 of a yeast cake (from a 2.5 gallon batch) into a 1 pint starter (1.040) inside a 1L bottle. I did this last night at 10 PM and had krausen out of the airlock this morning by 7 AM. I washed it off, re-sanitized the airlock...and it was filling up again within a hour! I left it inside a bucket to minimize the mess I'll have when I get home... Should make for an interesting brewing session on Friday night!
 

rsmith179

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Oh yeah, krausen definately will form even on a stirplate. Had a 1000ml flask going with a starter of WLP001. Although this isn't by any means a very explosive yeast, I still had krausen coming out the top. I just use a sanitized piece of foil instead of an airlock for the starter. Much easier to clean and replace. I just cleaned up the stuff that came out of the starter and made sure that the foil was still secure around the top of the flask.
 

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