The thing with a lot of LFS is that they actually know what they're talking about. Meaning they're trying to sell you a fish, even if it means putting a shark in a 10 gal tank. First you get to buy their fish, then when it dies, you'll get to buy another fish, PLUS upgrade to a bigger tank this time. These places make money off dying fish. After all, if they gave great advice and all the fish lived a long happy life, they'd go out of business. Nobody would need to buy new fish.