trouble with coral

[UseSkaForEvil]

so ive had a small frag of some capnella coral for a long time and it hasnt grown a bit. in fact it used to kinda stretch out but now its gotten much more stubby. the little mouths open and close depending on if soemthing bothers it or the lightign changes but it hasnt grown at all in more than 6 months i also had some zoes awhile back but they didnt spread and actually disappeared pretty quickly (something was eating them i geuss? any other reason?) any ideas?

[Booboo33062]

some of my zoos did the same thing, but it was over a while. It didn't happen in a couple weeks, it took longer. The other I don't know anything about. I don't even know what it is. Hope someone else can help you.

[Reefyone]

Try to move it where are more light and flow. Alkalinity above 8.5 dKH can help. Check ammonia - some snail could die in the rocks.
Also, could be your tank super-clean? My capnella does very good in a dirty tank with a lot of nutrients.

In another tank I moved one of them in the corner, and this one closed (contracted) for a long time. Moved in the middle - it opened again.