Hmm nice link. I might try that mix out when I start trying to see some of the other deficiencies like zinc/etc.
I was able to buy CSM without B from nilocg, so I'll use that for my boron tests.
It would be great if you also did some tests. Double checking is always ideal. Macro nutrients are the easiest and quickest to do. You can also get a CO2 manifold to split one tank to feed many test tanks if you want to use CO2.