Flatworm exit to remove predatory worm?

[NickC]

I know of someone else who had a problem with the worm im thinking your talking about he ended up taking the rock out and sawing it in half to remove the worm. Once he did that he found the worm and it was 3-4 feet long burrowed in the rock.

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[asylumdown]

It's worth a shot, but if you were going to dose at a concentration required to kill anything other than flatworms, you shouldn't do it in your main system. I was able to kill AEFW at between 100-500 times the recommended dose for a tank, and at that concentration all the pods immediately expired as well. Not sure what effect if would have on a much larger, arguably more complex animal like the worms you're dealing with. My suspicion is that it likely won't work (flatworms are about as related to the worms you're dealing with as I am to a lizard), but if you're at your wits end there's no reason not to try it.