Generally, it's my experience that you should disregard anything your LFS says. I love my LFS, but I take everything they say with a grain of salt, and verify with research here or somewhere else. Consider that they are in the business of keeping fish alive TEMPORARILY.
Beth (and many of the more experienced members on this site) are willing to give free UNBIASED opinions.
If you read the link that was posted above, I'm sure it's clear that it was brookynella. I'm sorry to preach, but it frustrates me when people insist on listening to their LFS over the great free, unbiased information provided on this forum...
Ok, I'm off my soapbox. Please don't take it personally!!!