Lilrodyreefer

The most natural way is a 6 Line Wrasse...

I have a. Six line and he doesn't eat the flat worms. I know it's the luck of the drawer with that kind of thing. Any other types of wrasses you or anyone would recommend

As stated, it's the most natural. However I don't think in an outbreak situtation any fish is going to erraticate the issue.

Not natural, but with the flat worm exit you should siphon as many as you can out of the tank for several days before treating. The little buggers release toxins when they die, the fewer there are, the less chance of their death killing something else in the tank. I also found when I treated my nano tank several years back I had to use nearly double the recommended dose to kill them all. So if the first treatment doesn't eradicate them, don't hesitate to hit them again with a stronger dose.
Good luck.

Phil

Here's the link: http://www.melevsreef.com/flatworms.html

Thanks Marc, I couldn't remember where that article was at.

I had a large outbreak last year and didn't do anything. In a couple of months, they got bored and were gone. No problems and no lost or damaged corals, but not all flatworms are the same.