There is a really interesting thread on Reefcentral ( http://reefcentral.com/forums/showthread.php?t=2670592&highlight=aefw ) regarding AEFW. Zeovit Flatworm Stop and wormwood have been suggested as in tank treatments without removing sps. I don't believe anyone has come up with a working dose of wormwood, but JDA (online name) has shared his experience and observation with Zeovit Flatworm Stop. I have never had aefw but I looked into utilizing Zeovit Flatworm Stop as a preventative. Yes I use Bayer dip on all coral additions, I only add frags and never colonies, I always inspect carefully and I cut all frag plugs off but even Bayer may not be 100% effective and of course nothing yet kills eggs. Zeovit Flatworm Stop is expensive and so I found it cost prohibitive as a preventative, just in case approach. But this is new ground in potentially treating an AEFW infestation.