Fermentation pauses?

[Harry Bloomfield]

I'm paying much more attention to the process, as this is the first return to wine and brewing in 25 years. I noticed my wine 5 gall. seemed to take a rest in its fermentation mid process, then today my stout did exactly the same - as indicated by the airlock. Both have/are carefully temperature controlled to within 0.5 deg C, the wine at 22C and the stout at 19C. The fermenting pause was most evident in the stout this morning, at 4 days into the suggested 7 days. It was bubbling happily at 9:00 at 10:00 it had stopped completely. At around 11:00 it had restarted and was back to a steady bubbling..

 

[johncrobinson]

Its a living thing it does its own thing.
Wellcome back to a great hobby.

 

[Harry Bloomfield]

Might light affect the yeast's fermentation process I wonder?

 

[fury_tea]

Might light affect the yeast's fermentation process I wonder?

Is your beer/wine in direct sunlight?
UV rays from light will have negative effects on your homebrews. It can cause off flavours.

 

[Harry Bloomfield]

No, it's in my utility room, which north facing.

I just wondered because the fermentation seems least active first thing on a morning, when its still dark.

 

[johncrobinson]

The "old" advice is to keep fermenting wine out of sunlight.

I think you will be fine in a north facing room.