Anvil Carboy Cooling SystemTemperature control is a very important part of fermentation for optimal flavor and control and quality of the finished beer. With the ANVIL cooling system, you wont be disappointed. This simple system includes virtually everything you need to keep your beer temperature closely regulated at an amazing price. Needed, but not included, is a cooler filled with water and ice, or a glycol chiller, and if desired an insulation jacket for your carboy. System