Hi, I have a quick question (or more...), would it be ok to get a different kind of rock instead of live rock? My aquarium book said that some places supply lava rock (the man made stuff without all of those pesky metals). I was also wondering what kind of dead rock (or deed rock in the tank forum :P ) I could get because I'm kinda on a tight budget. also, if I get some live sand and sprinkle it on my "base substrate" would that be enough to seed whatever rock I have? I guess what I'm trying to ask is how can I get around getting live rock? Thanks a lot!