My method for keeping a carboy at an appropriate temperature for
fermentation involves this:


Placed the carboy in a large plastic tub, filled tub with water
approximately half way up the side of the carboy. placed an 75 watt
aquarium heater in this waterbath. This seemed to keep the temperature
of the fermenting liquid in the carboy more stable than if the heater
was immersed directly into the carboy. Hope this helps

Rick
Lou wrote:
> I want to heat my primary 50 gal plastic vat this yeqar. It will be in a
> cold garage. I've heard about using an electric blanket. I was thinking of a
> fish tank heater! Any thoughts?