I bought this coral from my LFS about a week ago and have some concerns about it I'm hoping someone could help me out. I was told this is an acan echinata correct me if I am wrong but there seems to be a spiky white growth in it that doesn't seem to be part of the coral because the flesh recedes around that area. The spike growth does not sway in the current and looks solid. I have not seen much activity/no sweeper tentacles and I've done coral rx and iodine dip any advice is greatly appreciated thank you.