Cross Section of the G70 Base Kelsey August 12, 2020 15:35 Updated The heating element spans 80% of the base for optimal, even heating and the conical shaped floor allows for maximum yield of wort. Related articles What are the minimum and maximum grain bills I can brew with on the G70? What do I clean the Grainfather G30 or G70 with? Why does the Connect Control Box connect via Bluetooth rather than WiFi? G70 220V USA or Canada Socket Guide Why does my sparge water need to be a specific temperature?