Trade them to your lfs or donate them to your local reef club. They will not go unappreciated. There is, however, a rapidly multiplying small snail, the strombus grazer, that often hitchhikes in (I had to ask my lfs for some after losing my last batch: great little cleaners, but usually free from your lfs. They also have a 'trunk.' The shell is subtly different, and they never reach half an inch in size.) The problem with too many Nassarius is all of them starving.
I just had some breed, and the eggs may have hatched---but for the record, I've been at this decades, and have never had an actually valuable species multiply.