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Old 10-29-2012, 07:23 PM   #1
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Default Is safale S04 a less aggressive yeast?

I pitched s04 for the first time on Friday. It's fermenting, but all I have is a thin layer of bubble popping krausen. I'm more accustomed to the thick trying to crawl out the airlock fermentation.

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Old 10-29-2012, 07:25 PM   #2
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Aggressive compared to what? Right???

As apposed to WLP565 Saison yeast (that's the last yeast I pitched befor ethis batch)

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Old 10-29-2012, 07:27 PM   #3
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The US-04 is a high flocculation yeast that's supposedly known for fast fermentations. The US-05 is low to medium flocculation with clean flavors. The 04 should be better by defenition at midwest site.
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Old 10-29-2012, 07:32 PM   #4
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Krausen doesn't always tell the whole story. S-04 is a pretty quick fermenting yeast, usually completing a 1.050 batch in about 4 days.

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Old 10-30-2012, 01:16 AM   #5
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My experience is it is quick...but no, it doesn't always go crazy or produce a lot of Krausen. It can be visually anti-climactic, but makes good beer! I use S-04 and S-05 almost exclusively.

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Old 10-30-2012, 01:33 AM   #6
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It's quicker and a little quieter than the 05, I found at an ambient of 63/64F. Tastes beautiful right off the bat!

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Old 10-30-2012, 01:44 AM   #7
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s04 was a beast on my ~1.070 OG IPA. It fermented very quickly at 68*, around 4 days, and it stopped at around 1.020. The krausen was huge and I almost needed a blow off tube.

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Old 10-30-2012, 02:26 AM   #8
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Quote:
Originally Posted by Halbrust View Post
I pitched s04 for the first time on Friday. It's fermenting, but all I have is a thin layer of bubble popping krausen. I'm more accustomed to the thick trying to crawl out the airlock fermentation.
Every fermentation is different. Krauzen action can go any number of ways. I've had fermentations with s-04 where I too was a little perturbed by the seeming lack of dynamics and others where I was hoping the volcanic eruption would soon subside

It's all good
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Old 10-30-2012, 02:45 AM   #9
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in my experience S-04 doesn't create a lot of krausen but it seems to finish pretty fast

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