I'm keeping my fermenter in my home office which is a little cooler than the rest of my house but still on the main floor. The fermenter is at 66 degrees my question is that to low of temperature? I was thinking of getting a space heater for the room to help bring up the temp. I'm fermenting big river brown ale. It was bubbling like crazy yesterday but has all but stopped today. It's only been in the fermenter for ~48 hours. Thanks again.