I'm a noob home brewer, having only completed a Mr. Beer kit, but im looking into a 3 gallon carboy and soda keg, possibly a 2.5 gal secondary. Anyhow I was wondering if any of you guys brew small 3 Gallon batches and what your temperature control methods are?
Aside buying a small gutted fridge, I am contemplating the idea of building a wood frame....which will contain a 2-layer (blue foam) box to hold the carboy. Then, I would heat/cool the box with a peltier module on each side, one hot one cold, connected to a digital thermostat, that would cut them on/off to maintain perfect fermentation temp.
I was just curious as to what methods are used. I have seen 60 watt light bulbs etc.. I want to create the ideal environment.