I just tried my first all grain. According to Beer Smith, with a mash temp of 150F with a steep time of 75 minutes, I should have had a pre boil gravity around 1.039. After a fly sparging, I ended up with a low per boil gravity of 1.023 and post boil OG of 1.034.
I'm looking what I could have done wrong so I can correct it next batch. Thanks
7.5lb Pale 2 row
0.75 Crafa II
0.5 Roasted Barley