So turns out Brix is a different beast when it comes to salt than Maltose. In my tank, I need to target 4.4Brix and use these sites

http://reefkeeping.com/issues/2006-12/rhf/index.php#15
https://www.hamzasreef.com/Contents/Calculators/SalinityConversion.php

2020-09-26T16:33Z[GMT]