You can get flexible heating film from www.beanfarm.com for $3-4 per foot and make it any length you want. It generates about 40 watts per foot and can be wrapped around fermentors. They call it "Flexwatt" on their site.
Something is always fermenting....
"It's Bahl Hornin'"
Kegged: Sour Saison, Pale Ale, Aggie Ale, Firestone DBA, De Koninck Blonde
Bottled: Belgian Quad (Grand Reserve), Derangement (Belgian Dark Strong)
On Deck: Pliny the Younger