Cross Section of the G70 Base Kelsey September 20, 2021 01:02 Updated The G70 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 that can be brewed with on the G70? G70 Manual Operation Features G70 220V USA or Canada Socket Guide Quick Start Guide - G70 What do I clean the Grainfather brewing and fermenting vessels?