I have not even begun to attempt my first brew, but am just starting to dive into figuring out how its all done. I have noticed a few times that people who don't have adequate room temperature for the fermenting process, or perhaps the recipe requires a certain temperature. When people have these issues, I have seen them place some form of heat wrap or straps on their primary to help maintain temperature. I was just wondering if anyone had considered the possible use of aquarium heaters for this purpose? They seem that they would be functional for the need, but I'm not sure if they would be usable due to the fact that they are not designed food safe.