I agree with dhodorow in some parts about the boycot. See I work there and I have fish of my own and never had the problem that they have. I work at one thats in so cal, and i've tried to work on the system they have, except this peticular one has the commercial bio-wheel system. I'm suprise they even had saltwater before. Except due to their losses they took that away and now they only have freshwater, but thats not even doing so great. A new order of fish arrives every wednesday, and about three days later, half of them are dead. I've tried talking to the GM about that, but all he cares about is filling up the tanks with fish. So listen to our advise, don't even bother with getting any fish from petco. WHY? they just want to make a buck and not care about our hobby.