I live in Houston, which unfortunately is NOT good weather for brewing. It's January and one day it's 80 degrees outside and the next it's 40 degrees! I just racked my first batch of beer into my secondary 2 days ago and over the last 2 days the temp has climbed to 76 degrees. The temp has gone back down to ~70, but I fear I may have ruined my first batch during the course of those 2 warmer days.
My question is, how do you guys maintain a constant fermentation temp? I've done some research and I'm interested in purchasing a Sanyo 4912 mini-fridge with an external thermostat to maintain a good fermentation temp. Is this the best way? I can't imagine everyone uses a fridge, so how do you keep a constant temp?