Sounds like it Laurie. It scrapes off, but that doesn't solve the problem. It comes back in a few hours.
Atomikk - that QT would work great. I did not remove all zoas from my display, just the ones that had shown symptoms of the fungus and any that were near those colonies. For some reason it really seemed to target orange and green zoas, not sure if thats a coincidence or not. I used about 1.5 cups RO water brought to tank temp, and matched PH, with 1 packet of Furan-2. I did the dip for 15-20 min. I did not dip twice a day, rather once a day and i let the zoas rest in the QT for 2 days between dips for a total of 2 dips in a week. I contimplated a 3rd, but since i saw some positive results i held off on that 3rd dip and ended up not needing it.
follow3 - Furan-2 is effective against a wide variety of gram positive and gram negative baterial diseases. It comes in a capsule and packet form, i used the packet form. Both have the same dosage instructions - 1 packet/capsule in 10 gal of water. You can find it at most LFS or online.
Let me know how your treatments go!!
Miles