To use a FastFerment with BrewJacket Immersion you will need a 4-legged conical jacket as well as the pre-drilled lid. FastFerment can be used with Immersion in two different configurations, either mounted on the wall or in it’s optional stand. The video below demonstrates how to install the conical jacket while the FastFerment is in its wall mount configuration.
Maximum Temperature Change: 25°F +/- Ambient (based on an ambient of 75°F). Greater if you insulate the bulb separately.