Vince, where do you get potassium permanganate? I've heard that's the only thing that works on Monti-eating nudibranchs. I had them once, but they were on one coral in QT a long time ago...so I just fragged the coral, threw away the base, and never saw any ever again. I'd like to keep some potassium permanganate on hand just in case.
Interesting on the giant flatworms. I'd never seen them before, couldn't find anything specific on them online, so they had to go. I wish I had some small tanks where I could put interesting critters.