Hey guys, I have some cesp as well.
I'm experimenting on how it does with intense light with less intense light.
Natural sunlight hitting the cesp will make it turn blue from what I have seen.
I also dose kalk everyday and not sure if its because of the kalk but my cesp shows its glitters very very well.
Also my cesp will pulse and few others on RC mentioned that theirs pulsed too. Not pulsing like a pom pom xenia, its a bit different. Mine will close its polyps and twist, then untwist and open its polyps. It doesn't do it constantly, I think I saw mine do it like 5-6 times in a minute and then stopped doing it and then a few minutes later it did it again.
I posted this on the big thread about cesp on RC's soft coral forum.