I stand by using mexican turbo snails. Lettuce nudi's I think are supposed to eat it, as well as certain hermits.
What I would really like to try would be saltwater mollies, I've heard many positive results from people using them.
Last but not least water changes always seem to work on tanks not overstocked.
HTH
Chris
If your tank is big enough, a yellow tang will work wonders. Not to mention they are one of the most beautiful fish out there IMO. Common but beautiful. I agree with the Mexican turbos, the only problem with those is that if you have a lot of little frags lying around, they'll knock them over frequently.