Small Filter Feeder Questions

[Tennyson]

Lately I've been interested in getting small little filter feeding things. They all seem like they need a little bit more care than normal filter feeders like a feather duster.

The ones I'm interested are:
-Cluster Duster
-Christmas Tree Worm

Are any of these species impossible to keep or don't last more than a month or two?

Cluster Duster
My invert book says that they do not survive well in aquariums unless collected with hard substrate and maintained without predatory fishes or serpent stars.

So is it saying that serpent stars will eat them? And what are the consequences if they aren't collected with a hard substrate? Will they fall apart?

And I imagine they need more food than your average feather duster right?

Christmas Tree Worm
Do these last long in an aquarium if there are normal feedings of baby fozen brine shrimp and phytoplankton? And will the coral they live on survive well? I have seen one in my lfs, but it only had maybe 3 of the christmas tree worms, will they multiply?


I hope this is the right forum to post in, I've been sent here becuase I haven't gotten any answers on the care of any of these.

 

[seapug]

cluster dusters grow on most live rock their own in time. They can become so prolific is some tanks they become borderline pests. I had a ton in my tank but my Pygmy Angel cleared them out.

Christmas tree worms are quite easy in a mature tank. They normally come embedded in Porites coral heads. Some people claim they have to be fed but I've never "target fed" mine in the 1.5 years I've had them. If you can keep the coral alive the CTWs typically do fine.