Well went to rack my beer yesterday and found out my heating pad is no longer heating. I thought about just buying another or getting a brew belt, but after thinking about it I realized that they both could be a waste of money.
Right now I'm fermenting in a fridge with a 2 stage controller, but I'm going to expand to a fermentation cabinet (simmilar to http://www.wortomatic.com/articles/Knews-Hound-Builds-the-Beast). So with that in mind what would be the best long term way to add heat?