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Old 06-20-2012, 04:41 AM   #1
teruyaki
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Jun 2012
Posts: 6


So, it seems like every first time brewer has a lot of doubts about how their fermentation is going...like me. i have a question about my potentially huge mistake. while cooling my wort, which by the way isnt easy, i forgot to cool my top off water. big problem is that i didnt realize it until after i've poured it in. I'd estimate it was at about 90 degrees and about 1.5 gallons of the 5. OG read 1.041.
So i decided to continue with aeration and pitching the yeast. since im in hawaii, i put the bucket into a water bath to maintain temperature between 65-70. the airlock started bubbling pretty quickly within 12 hours, but stopped completely within 48. is everything going ok? should i be worried about oxidation and not enough aeration?

thanks guys for any insight



 
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Old 06-20-2012, 04:51 AM   #2
dennisjonesjr
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Jan 2012
Sierra Vista, AZ
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Check the gravity with a hydrometer. If the number is the same in 24 hours then the fermentation is done. If it was brewing higher than 75 degrees then it might be done already. That or it is just fermenting really slow :P



 
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Old 06-20-2012, 05:50 AM   #3
troyp42
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May 2012
Melbourne, Victoria
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1.5 gallons of 90 water into 5 gallons would have made stuff all diference to the wort temp, maybe a few degrees. Much more improtant to maintain a constant temp once fementation starts, like you did.

It may have finished showing any visible signs of fermentation such as airlock activity but it wont have finished fermenting and I would still leave it for 7-10 days to let the yeast clean up. then I would check the gravity over 2 days and if its the same then its probabl done.
I leave my brews a minimum of 2 weeks then Cold crash at 1-2C for 4-5 days
You can try giving the fermenter a gentle swirl to rouse up the yeast if it has decided to drop out. Just dont shake it which will cause oxidation.

 
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Old 06-20-2012, 07:11 AM   #4
teruyaki
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Jun 2012
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Thanks guys! Just took another gravity measurement. Got 1.024. That's just about 3 days since starting.

 
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Old 06-20-2012, 08:52 AM   #5
troyp42
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May 2012
Melbourne, Victoria
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1.024 is a tad high. What was your start gravity?

 
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Old 06-20-2012, 09:36 AM   #6
hercher
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Jul 2009
Scranton
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So you are about 3 days in. Don't do anything. Wait. Have a homebrew. I would wait until about the 7th day, then take a gravity reading. I bet you'll find your SG has dropped further. Airlock activity (or the lack thereof) is meaningless.
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Old 06-20-2012, 11:22 AM   #7
Obliviousbrew
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Feb 2012
Benidorm, Alicante/Spain
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Most of my beers are done in 4 or 5 days at the 4 th or 5th days I take a hydro sample and another 2 days after the first reading if its the same I rack to secondary. 48 hs after reaching FG its enough for the yeast to clean.
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Old 06-20-2012, 12:22 PM   #8
mrclean
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Apr 2012
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fermentation process aside, how long did it take you to cool wort? Did you take a temp. reading after you added the 90 degree water prior to pitching? I would be slightly suspect of DMS but in all likelyhood your are fine. just let it sit for a bit

 
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Old 06-20-2012, 02:00 PM   #9
Kingfish
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Aug 2009
Atlanta
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Quote:
Originally Posted by mrclean View Post
I would be slightly suspect of DMS...
Um...What? Can you explain how adding water is going to introduce DMS.

 
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Old 06-20-2012, 02:42 PM   #10
mrclean
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Apr 2012
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kingfish- it is more about the rate at which the wort was cooled rather than the water addition. S-methylmethionine is present in the grain and the decomposition to DMS is driven by heat.

So if the wort is not cooled quickly you will form DMS.



 
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