AC>  I would recommend the use of some live rock and some regular rock. 
AC> regular rock as a base on which you  build up the live rock. You nev
AC> what you are going to get when you purchase live rock so don't be su
AC> you find some unwanted critters ie. worms in the rock. I have had a 
AC> for about a year now and am just starting to notice a large amount o
AC> feather duster type. If i can be of any more help just ask, I am sti
AC> myself.
 
I just set up my first marine tank about a month ago. In the live rock 
i bought i have found a sand dollar and a tiny crab so far. I also got 
a feather duster i guess.
 
Lynn
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