Live rock is really good for your tank...it has all sorts of living bacteria's and little critters and such that help clean your tank.
Clowns have a tendency to not get a long very well. In tank that small 1 would probably be safest. Or you could try 3...that way it spreads out the battles.
1 dwarf IMO would be plen ty in there witht hat clown......be careful that you either buy a really small lion or a good sized clown....so that the clown doesn't become an expensive meal.
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Clint
CDevoe1111@aol.com [This message has been edited by TigerO'sRule (edited 03-06-2002).]