Good info from Devs!
Understanding ich is a big key to defeating it. In the Cyst form, nothing touch's it. When it falls from the fish into the bottom of the tank, it then divides into thousands of free swimming tomites in search of a host and in this phase is when it is vulnerable to medications. Vaccuming the tank daily helps cut down those cysts.
The tail "hemoraging" is in fact a secondary infection caused by the ich parasite, Fin rot. One has to deal with the parasites before dealing with secondary bacterial infections.
Salt is preferable, takes a bit longer, but isn't as harsh as some meds are that can push a fish over the edge. Any salt will do as long as it has no preservatives, additives or yps.... Rock salt, sea salt, kosher salts, AQ salt.