The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Temp fluctuation

Reply
 
LinkBack Thread Tools
Old 02-02-2013, 02:57 PM   #1
jmelliott87
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 3
Default Temp fluctuation

Newbie question. How much of an impact will temp fluctuation have on my primary? I live in Houston, TX and I keep my primary bucket in a coat closet right next to my thermostat. This winter Houston has been ranging from 35 F low in the morning and up to 70-75F in the afternoon and I have noticed that this week that the temp on my primary bucket started at 74F (day 1) and has gradually decreased to 68F (day7) even though the thermostat has been set to 72-74.

Notes: a cold front came thru this week. I'm doing an American Pale Ale. Been in the primary for 7 days and had good air lock activity for 3-4 days. Haven't taken a gravity reading yet. Any suggestion, recommendations or concerns? Please share. This is my first batch.

__________________
jmelliott87 is offline
 
Reply With Quote Quick reply to this message
Old 02-02-2013, 03:02 PM   #2
frazier
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: illinois
Posts: 1,682
Liked 92 Times on 83 Posts
Likes Given: 6

Default

Set up a swamp cooler - a bucket large enough for your fermenter, and a water bath. Keep it cool with frozen water bottles you can swap in as needed. You really want to be cooler than 68.

This should get you started: swamp cooler

And, do Texans really set thermostats to 74??

__________________

~
"Anything worth doing, is worth doing slowly." ~~ Mae West

frazier is offline
 
Reply With Quote Quick reply to this message
Old 02-03-2013, 02:51 AM   #3
tacks
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2012
Posts: 188
Liked 17 Times on 13 Posts
Likes Given: 19

Default

The less fluctuation, the better. From what other members have told me, fluctuations of more than 10°F in a 24 hour period can stall the yeast and render them dormant. If you have a basement or your house is on a slab, having contact with that surface would be a good strategy to try and regulate temperature. Otherwise I think Frazier has your best option. Also, ale yeasts operate best between 59°F and 70°F, as a general rule. Of course some work fine at 74°F but most work best a little cooler... Otherwise you're losing attenuation and leaving extra fermentables unused by the yeast.

__________________

Last edited by tacks; 02-03-2013 at 02:52 AM. Reason: spelling... damn you autocorrect!
tacks is offline
 
Reply With Quote Quick reply to this message
Old 02-03-2013, 02:09 PM   #4
unionrdr
Wannabe author
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
unionrdr's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Sheffield, Ohio
Posts: 27,768
Liked 1826 Times on 1609 Posts
Likes Given: 1293

Default

Higher temps won't leave unfermented wort. But too cool & they stall out & go dormant. High temps generally make off flavors that can be cleaned up after FG is reached in 3-7 days if they aren't to prevelant.
__________________
Everything works if ya let it-Roady(meatloaf)
My new book is on Amazon Kindle! http://www.amazon.com/dp/B00L3MCU0W
unionrdr is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Temp sensor fluctuation Layne Electric Brewing 31 10-22-2013 05:37 AM
Temp + OR - Fluctuation karljrberno Fermentation & Yeast 1 01-25-2012 09:17 AM
Temp Fluctuation JeffStewart Fermentation & Yeast 5 03-07-2011 10:23 PM
big temp fluctuation monty3777 Fermentation & Yeast 1 12-15-2009 08:05 PM
Temp fluctuation Richard Beginners Beer Brewing Forum 17 04-30-2007 02:34 PM