Treating Zoa pox with furan2, in an sps tank

[PogoMonogo]

I have a 90g mixed reef with alot of sps in them. Recently, a patch of green zoa just up and melted. Its a piece i have had for atleast a year. Now a some of my other zoa are starting to close up, and i am pretty sure its pox. Here is the problem though: the area this happened, and is now happening too, is a large area of zoa that have grown over my overflow box. I cant remove them from the aquarium. I have read about people treating with furan2 for pox, and i was wondering if anyone had any input on what they would do to SPS corals. Any other advice as far as the furan goes would also be appreciated. Thanks alot in advance.

 

[dalston]

I always treat with furan2 outside of the tank i.e. in a seperate container or baggie. I have never heard of treating the tank, and quite honestly can't see anything good happening. After Furan treatments, I always rinse the zoas off before adding them back to the tank, I don't want any of that chemical in my display.