Why did I get a low starch to sugar conversion? Kim June 22, 2020 12:44 Updated This could be due to a few factors; Incorrect grain crush Diastatic properties of the grain bill Incorrect mash temperature Wrong mash time Incorrect mash water pH Incorrect mash water calculations Mash thickness Related articles How can I improve my efficiency? Instructions - G30 My G40 sight glass doesn't always show the same measurement or appears to be off by a little bit - is something wrong with it? My S40 controller has an error code on it - What does it mean? What should my Grainfather Electric Grain Mill speed be set to?