This is my fourth batch on my new Brewzilla 65L, and I'm having problems troubleshooting an issue; thought you all could help:
The first batch was relatively lower OG (a helles) and I hit targets fine - except for too much pre-boil. After some tweaks to my spreadsheet and predictions, over the next few batches I dialed in everything to hit predicted pre and post-boil volumes, as well as pre-boil SG. However, today was the third batch in a row where the post-boil gravity is nearly 10 points low compared to the Beersmith prediction.
If I'm hitting the predicted pre-boil and post-boil volumes (by my own spreadsheet), and pre-boil gravity (by Beersmith), what are some possible avenues that I'd be losing gravity?
The first batch was relatively lower OG (a helles) and I hit targets fine - except for too much pre-boil. After some tweaks to my spreadsheet and predictions, over the next few batches I dialed in everything to hit predicted pre and post-boil volumes, as well as pre-boil SG. However, today was the third batch in a row where the post-boil gravity is nearly 10 points low compared to the Beersmith prediction.
If I'm hitting the predicted pre-boil and post-boil volumes (by my own spreadsheet), and pre-boil gravity (by Beersmith), what are some possible avenues that I'd be losing gravity?