experts only please

[fish-man-t]

well i have done it again!! i have found a piece of live rock that is to die for. it has 5-6 clams on it (or should i say in it) and i just noticed at least 100 small feather dusters on it. my question is will the feather duster grow biger? what whould i do if anything about food for them?? and is this rare to have so many on 1 little rock??
thanks tom

 

[fish-man-t]

bump :happyfish

 

[jmick]

bump

 

[xdave]

There are 2 kinds of feather dusters, the tiny ones you find clustered together stay about that size. You don't have to feed them. The colony will spread according to the amount of food they can extract from the water.

 

[fish-man-t]

is that rare or no? and how big can a colony get?

 

[1journeyman]

Depends on the rock... sometimes they are seen a lot.
The colony can blossom like crazy, or die away. Depends on foods, water quality and predation.

 

[fish-man-t]

thanks guys

 

[uberlink]

Why "experts only"? Just curious...this seems like a pretty simple one.