Grainfather 12VDC Cooling Pump & 3 way cordImprove the flavor profile of your brew and give it the fermentation environment it needs to ferment correctly. The Grainfather Cooling Pump makes it easy to control the fermentation process in the Grainfather Conical Fermenter. Its designed to regulate and stabilize the fermentation temperature by pumping cold water through the double walled insulated interior. And in just one fell swoop, you can target the perfect temperature for better beer! Cool