I am a new user of Promash and I'm not sure I know what I'm doing. I recently brewed an Aussie Light Ale all grain. The brewing sparge and boil went without a hitch. After bringing the volume of the wort up to 5 gals the SG was 1.040. Promash says that the SG should be 1.038 - 1.054. The only Sg that I pluged into the program was the SG after I brought the vol up to 5 gals ie 1.040. I don't feel comfortable with the program yet. What other numbers are you supposed to plug into the program. Does 68% efficiency sound right when you hit the lower SG limits.