This is Red Sea Pulsing Xenia. Believe it
or not, this started from one small stalk!
About 10 months ago! Who says Lugol's doesn't work. I purchased the stalk from a
LFS that got it from a hobbyist tank.
When I first put it in, a hermit crab started nibbling on it and all I could find was a tiny little piece. I placed this piece in a plastic container on the bottom for a while. When I felt that it had recovered, I "super-glued" it to a rock and man, did it take off! I am trading pieces to my LFS now. Oh and the crab lives in one of my LFS's tanks now.