I am trying to set up a marine aquarium (my first, usually do freshwater) with the eventual goal of octos but since imin school and moving every 4-8 months they mighyt have to wait anyway, i have been doing som reading on these forums and had some questions about live rock (any help is much appreciated): 1. how is it "live"? i assume there is stuff living on it but what kinds of stuff (this is for interest only) like, just bacteria etc. or are thetre actually litte worms/crabs and stuff? 2. how much is needed? i have read that it is usually 1-1.5 pounds per gallon, but was wondering if this is just foroctos or if this goes for any aquarium. 3. where's a good place to get the stuff? do most aquarium specialists have it or are there any preferred webistes to get it from and which is cheaper/better quality? i think that's about it... any help would be great!