I just started carbon after the addition of my first tang - a Tomini. I am using large diameter pelletized carbon in a reactor with no fluidized motion or grinding. The reactor output is fed into a 5 micron filter sock. I am monitoring the fish each day and report any HLLE within 30 days. Not scientific, but maybe a good anecdote.
You have a number of things going for you here; tomini's don't easily get HLLE, using pelleted carbon, and then, the post-filtration. The only downside is that 30 days is almost always too soon to tell. Four months is a better time test.
Jay