I just set up a 7.1 cu. ft. chest freezer to be used as a fermentation chamber. The freezer is in a basement that can get as low as 55 in winter and as high as the mid 70’s in summer. So this is probably as gentle as it gets. My external controller can do a heater as well as the freezer, so I think I’m basically all set, except for not actually having a heater to connect.
I can let it ride for a while, but I’m thinking I may very occasionally need a little bit of heat, say if I want to take some Wyeast 3724 into the 80s
I’ve heard of people using light bulbs, mats from lizard aquariums, hair dryers, electric blankets, and compact space heaters, but they all seem a bit risky…
So what are the pros and cons of the different heating methods?