Thank you for your input. Of course I am monitoring the levels and everything is fine now. Yes I meant Fish or corals. What else would I have meant?

I wouldn't stress about putting snails or crabs in there, and already have 2 serpant stars, but I didn't make that clear. I have quite a bit in the tank already but just need some larger fish. Not even corals really cause I don't have the lights I want yet. I meant fish. I just thought it was odd the
LFS lady said that and wanted to run it by you guys with all your experience.
OH by the way today at the another
LFS I saw a Naso Tang that was at least 9 inches long!! I kid you not! I had to step back when I first looked into the tank! That was neat.
Promise not to go nuts this weekend and overload the tank.
Thanks,
Fishgirl