Ok, so a couple weeks back I brewed up a 1.065 OG batch, and pitched a pack of rehydrated US04.
Plastic bucket fermenter was placed in cool basement, per my lab thermometer laying next to bucket stayed pretty consistently in the 62-64F range (which feels accurate as our upstairs heat is set to 70F, and it's a lot cooler downstairs.)
Anyway, fermentation seemed to be pretty normal, but somewhere around day 2-3 I look at the fermometer strip on my bucket, and it had jumped from mid 60s day prior to mid 70s...like 74 to 76!
I've never had a fermentation jump the temp that much. I thought it was maybe 5* over ambient, not 10-12*! By next day it had dropped back to mid 60s, guessing fermentation had ended.
I did have a dark t shirt over the bucket, but can't believe that made that big a difference (this bucket is somewhat translucent and wanted to block light).
Is it likely that the fermometer is just wildly inaccurate?
Plastic bucket fermenter was placed in cool basement, per my lab thermometer laying next to bucket stayed pretty consistently in the 62-64F range (which feels accurate as our upstairs heat is set to 70F, and it's a lot cooler downstairs.)
Anyway, fermentation seemed to be pretty normal, but somewhere around day 2-3 I look at the fermometer strip on my bucket, and it had jumped from mid 60s day prior to mid 70s...like 74 to 76!
I've never had a fermentation jump the temp that much. I thought it was maybe 5* over ambient, not 10-12*! By next day it had dropped back to mid 60s, guessing fermentation had ended.
I did have a dark t shirt over the bucket, but can't believe that made that big a difference (this bucket is somewhat translucent and wanted to block light).
Is it likely that the fermometer is just wildly inaccurate?