Hi what may be better -vinegar or citric acid When using A/B for acacias ( using some nice floribundas trunk brk) shaggy jungle similar tek

Either or, shouldn't matter.
Anecdotally, there were greater emulsions when using citric.
But there may have been other factors at play, so I can't blame citric definitively.

Let us know how you go with floribunda.

I always use vinegar fo rease of use an cost. I always use 1:4 up to 1:7 parts vinegar:water. Make sure there is enough vinegar otherwise there wont be enough acetic acid to bind to the dmt to form dmt-acetate. pH is always so consistent with vinegar and there is no danger of too low a pH destroying your dmt (unlike hydrochloric acid).