QUOTE(one8thscale @ Jan 31 2007, 02:53 AM)

I read up on using it on RC but am afraid of a tank crash since dying flatworms release toxins. Did you have to do a big water change after? Did you run carbon. Really want to get rid of it but with a tank so small just worried I might kill everything. LMK your system. Was also reading that some wrasses eat them, what do you think?
A couple of years ago I successfully eliminated flatworms in a 15 gallon tank using Flatworm Exit. I remember that I was concerned about the toxins too; so I used an eyedropper to suck out as many as I could find (one or two dozen) before I treated my reef. However, when I added the Faltworm Exit, I saw about a couple of dozen more starting to move around (then they start to float as they begin to die).
As you stated, Flatworm Exit is safe for reefs, but the toxins that flatworms give off as they die are not; so you must remove the carbon when treating, but then run new carbon when the flatworms start to die. In addition to adding the fresh carbon, I continued to remove them from my tank as fast as I could find them (using a siphon, effectively performing a water change).
I treated my tank in a similar way the next day and found a few more. I followed the treatments with several partial water changes and I replaced the carbon a few times shortly afterward.
A natural predator (like a Six Line) is a good way to go if it is a fish that you would like to keep after the problem has been resolved. I’d normally recommend a little larger tank for one, but the dimensions of your tank might make it more suitable. Once the Six Line gets established, you might have problems adding another fish.
QUOTE(one8thscale @ Jan 31 2007, 12:40 AM)

So now no fish and I can't add anything else. Bummer
I thought January 15th was just the ‘last day to add new corals’ and didn’t apply to fish.