Flatworm warning

[albert_dao]

Originally Posted by lorenz0

they for sure aren't Planarian. Those were the ones that infested my 60gal a few years back.

found this picture, looks very similar to what I have

If it has the scalloped tail, it's not the same as an AEFW which look like this:

[Ross]

I had clear flatworms similar to the first photo a while back in my 9 gallon.
A dose of PraziPro took care of them fast without any visible harm to the corals.

http://www.canreef.com/vbulletin/showthread.php?t=82942

[Myka]

If your tank would sustain a Yellow Coris Wrasse (tankmates? size of tank?) then they are great option for flatworms. They are not aggressive like many other worm-hating Wrasses. Both of my reefs have Yellow Coris Wrasses in them. They are good janitors.