I know this is a hard to care for species, but I couldn't remember what the coral was at the store, and they didn't know either, but for $20 I figured it was worth the risk for a pretty blue coral. Anyone have experience with these, I've read up on em, but would love personal feedback. Mine is light blue with no stalks to speak off. It seems to open at night more and I have it placed about halfway down my 120 under t5s.