ya its live rock I got from a store called aqua creations in town (halifax) They cure it right.They even had soem mushrom coral on one of them. I havent really done any testing on it yet. I figure its been only going for almost 2 weeks whats the point yet. I supose I should soon. I know I dont scrub the coral just vaccum it. Should I chance it to sand later on? if thats even possible now. One of my buddies I know through work is suposed to bring me some books but I havent seen them yet, Hopefully tommorow.