What goes good with cichlids?

[Beza]

Hey so I have a 75gal tank with a bunch of cichlids (10) + 1 pleco in it, that I bought about a week ago.

I was talking to the guy at Big Al's and he said not to throw any more fish in there for at least 2 weeks. Is this true? I used pretty much all of the original water - which was a pain in the ass, believe me, so would they still be that stressed from a move?

What I am really interested in is FW cleaner species, like more plecos or snails or something.

Any suggestions or comments? Are there other fish hardy enough to put up with these mofos?