[QUOTE=LizStreithorst;1326169]I've heard that those are not good with Discus, though.[/QI
I had not one issue with them with discus or any other species. They are better cleaners when they are young; when they get grown out at 4-5 inches, I replace them. They get lazy at that age and look for handouts/fed more rather than clean the tank. That has been my experience and you can't find a better cleaner than a SAE.