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Thanks, I think thats what it was called at the LFS. I just couldn't remember.
I have had this for a few weeks, but recently the polyps have retracted into the stalks and occasionally protrude a little. I don't think they have died. Does anyone know why they have retracted? It seems this happened round about the same time as when I changed my skimmer. All the water parameters are same as before. My other polyps are do fine.
it is probably going to shed. i have a pretty good sized toadstool that sheds about every 10 days. it will become glossy looking and then skin will start to shed. good flow will help the process