Are the formulas/calculations different? I am still on version 1.6, not because I don’t particularly want to upgrade, but because it just works. I know Martin is a low-DO brewer too; is there any low-DO stuff included in the newer versions?
Here is the explanation from the email. I am hoping the changes made for thin mashes helps me. I have had issues hitting numbers with biab.
This is a major upgrade to Bru'n Water (v 5.3). The pH prediction has been further improved, additional grain options have been added, calculations for thin mashes are improved, and the addition of sodium metabisulfite allows users to explore low dissolved oxygen brewing."