Yes the cause or source of the original infection is sometimes a mystery for Pox. A seemingly healthy colony may just all of a sudden come down with the curse. It can easily spread to other colonies, especially ones close by.... I have had some luck with some and total failure with others over time. I think there are other factors not understood well about the causes and the extreme treatment required to kill the infection without killing the Zoas...........
As to the cure being successful only time will tell, many times they never fully recover and occasionally they do. I had a large colony of Reds and Greens that where treated at the same time on about a 4 inch base....... Over time many of the Greens came back but only a few of the Red ones ever recovered.Why did the Greenies live and the Reds did not on the same rock?? I haven't a clue..
If I ever have a future infection I think separation of the individual heads as much as I could (regardless of the size of the colony ) into small "fragable" pieces and treatment would then follow. Any frag groups that where not responding then could be eliminated easier giving the others a better chance of survivability.....................I may be in error, but from observation, less tightly packed colonies seem to have a better chance of treatment success........ Yours may fall into this category from your pictures, not being closely spaced........
Keep us updated on your success or lack there off over time. The total recovery rate is low, I hope you beat the odds. But I do think additional dips maybe needed. I had a colony I lost thinking that the initial dips had cured it...... Wrong!! .......It returned with a vengeance and then it was too late for that colony.
Sometimes like here with a Bacteria, or with fungi and viruses they are just too hard to kill with out doing in the host critter.
Good Luck....... Warren
