Like most stars, "not really sure what they eat". Other than that, probably not. They are so small, I reckon if you have a well aged tank (like yours) they'd do fine.
I really like your fromia star, every time I see it I think about getting one for myself. My concern is that it will knock my rocks around since I don't seem to stack my rockwork well. Have you had any problem with your seastars knocking over rocks or small coral fragments?
Thanks Bronco:
To polish my water a little. I am not running a skimmer these days, but I figure my water could use a little filtering since I feed my fish a lot.
Some people say the bio-wheels can become nitrate factories because they are so efficient for getting ammonia to the bacteria that colonize them, but I'll reserve judgement until it's run for a while.
As usual, your pics rock!
I often refer people to your "hermit" thread. Very informative.
You (and bronco300) have some of the best looking zoos and shrooms in captivity...wow! ***)