You're welcome.
IMHO, one should always be monitoring all of one's corals all the time. That said, sure, when things aren't sick, I tend to more glance at them quickly versus inspect them thoroughly. Zoanthids and palythoas tend to let one know when they're not happy by not opening fully or at all. While they can have daily cycles of opening and closing, and things like hermits and snails crawling across them will cause them to close temporarily, when you notice they've been closed for more than a day or two, there's likely something going on.
IME with Furan2, pox won't go away right after the first dip, but by the third day or so you should notice the infection slowing. Here's an excerpt from an article on
treating zoa pox with Furan2. The treatment is stressful to the polyps, but during the rest period after 3 days of treatment, if all goes well, they should start to recover.
Here's the relevant part from that article. Note, Furan2 is no longer sold in capsule form, but in a packet. Use an entire packet in place of the single capsule referenced. I use reef tank water instead of new saltwater because then there is no issue with additonal stress due to the dip solution being a different temp or makeup (salinity, ph, alk, ca, mag, etc.).
Additional requirements for treatment:
1 cup of new saltwater (Update 2009.03.30: For the sake of clarity, we have edited this article to reflect that a cup of new saltwater, non-tank water but new saltwater of appropriate salinity, is needed. This reference change has been made several times in this article, but is only commented on here.)
1 capsule of Furan
1 extra cup of Aquarium Water (this is used to wash the Zoanthids after the treatment and before they are put back into your Aquarium; I do this because I don't want to risk Furan killing any of my fish or other corals).*
*Note: Through my experiment I found out that even if you don't wash your Zoanthid before putting it back into the main tank, it will not hurt any live stock or corals, (I have tested this on my own). But I'm washing it anyway just to be on the safe side. (ZoaID.com notes: t is always a good idea to target treat infected animals vs. a global tank treatment when possible!)
PH, Temp, and Salinity Level:
Make sure you match the temp, pH, and salinity level of your new saltwater to your current tank before the treatment.
Procedure:
place 1 capsule into the new saltwater cup and mix it good until the new saltwater water turns green. Put the zoa in the Furan mix and leave it for xxx minutes. I recommend at least 15 min but not more than 30 min.
After the treatment, wash the zoas in your tank water on the other cup you had put aside. Then put the zoas back in the tank where there is a stronger flow.
*Note: Your zoa will have a green dye to its body but it is fine. The green dye should fade away in a day or two.
Do 3 treatments in a row then let it rest for 4-7 days; depending on the condition of your Zoanthids. If the ZoaPox is still on the Zoanthids then continue with another three treatments. But make sure you let it rest 4-7 days after every 3 treatments.