<a href=showthread.php?s=&postid=11837104#post11837104 target=_blank>Originally posted</a> by crpeck
When I first set up my tank, a bunch of little (tiny) hitchhiker corals grew on one rock that looked a lot like those. They were tiny and the polyps were more clear. The big difference was that there was just a bit of hard skeleton that grew up like a cup and the colony wasn't so close together/connected.
I wasn't able to keep them alive. I wonder now if they needed direct feeding like the tubastrea and dendrophyllia?