I’ve not tried the F100 but I did try the black F100 ink in a B&W Ecotank. The ink could not be any further from true black if it tried. It printed & pressed more like a very dark navy blue. That was enough to put me off Epson genuine sublimation inks.
We personally use inkforinkjet inks in our ecotanks but I’m aware some don’t like Ken. We have also used Sublinova with very good results also.